SWIG MapScript API Reference

Author

Sean Gillies

Author

Steve Lime

Contact

steve.lime at dnr.state.mn.us

Author

Frank Warmerdam

Contact

warmerdam at pobox.com

Author

Umberto Nicoletti

Contact

umberto.nicoletti at gmail.com

Author

Tamas Szekeres

Contact

szekerest at gmail.com

Author

Daniel Morissette

Contact

dmorisette at mapgears.com

Author

Jeff McKenna

Contact

jmckenna at gatewaygeomatics.com

Last Updated

2021-05-21

Примечание

PHP 7 support is included in the SWIG API as of the MapServer 7.4.0 release.

Содержание

• SWIG MapScript API Reference

  • Introduction

    • Appendices

    • Documentation Elements

    • fooObj

    • Additional Documentation

  • MapScript Constants

    • Version

    • Logical Control - Boolean Values

    • Logical Control - Status Values

    • Map Units

    • Layer Types

    • Label Positions

    • Label Size (Bitmap only)

    • Shape Types

    • Measured Shape Types

    • Shapefile Types

    • Query Types

    • File Types

    • Querymap Styles

    • Connection Types

    • DB Connection Types

    • Join Types

    • Line Join Types (for rendering)

    • Image Types

    • Image Modes

    • Symbol Types

    • Return Codes

    • Limiters

    • Error Return Codes

  • MapScript Functions

  • MapScript Classes

    • classObj

    • colorObj

    • errorObj

    • fontSetObj

    • hashTableObj

    • imageObj

    • intarray

    • labelCacheMemberObj

    • labelCacheObj

    • labelObj

    • layerObj

    • legendObj

    • lineObj

    • mapObj

    • markerCacheMemberObj

    • outputFormatObj

    • OWSRequest

    • pointObj

    • projectionObj

    • rectObj

    • referenceMapObj

    • resultCacheMemberObj

    • resultCacheObj

    • scalebarObj

    • shapefileObj

    • shapeObj

    • styleObj

    • symbolObj

    • symbolSetObj

    • webObj

Introduction

This is language agnostic documentation for the mapscript interface to MapServer generated by SWIG. This document is intended for developers and to serve as a reference for writers of more extensive, language specific documentation in DocBook format for the MDP.

Appendices

Language-specific extensions are described in the following appendices

Python MapScript Appendix

Documentation Elements

Classes will be documented in alphabetical order in the manner outlined below. Attributes and methods will be formatted as definition lists with the attribute or method as item, the type or return type as classifier, and a concise description. To make the document as agnostic as possible, we refer to the following types: int, float, and string. There are yet no mapscript methods that return arrays or sequences or accept array or sequence arguments.

We will use the SWIG term immutable to indicate that an attribute’s value is read-only.

fooObj

A paragraph or two about class fooObj.

fooObj Attributes

attributetype [access]

Concise description of the attribute.

Attribute name are completely lower case. Multiple words are packed together like outlinecolor.

Note that because of the way that mapscript is generated many confusing, meaningless, and even dangerous attributes might be exposed by objects.

fooObj Methods

method(type mandatory_parameter [, type optional_parameter=default])type

Description of the method including elaboration on the method arguments, the method’s actions, and returned values. Optional parameters and their default values are enclosed in brackets.

might be exposed byClass method names are camel case with a leading lower case character like getExpressionString.

Additional Documentation

There’s no point in duplicating the MapServer Mapfile Reference, which remains the primary reference for mapscript class attributes.

MapScript Constants

The constants are ordered alphabetically within each group.

Version

Name	Type
MS_VERSION	character

Logical Control - Boolean Values

Name	Type
MS_FALSE	integer
MS_NO	integer
MS_OFF	integer
MS_ON	integer
MS_TRUE	integer
MS_YES	integer

Logical Control - Status Values

Name	Type
MS_DEFAULT	integer
MS_DELETE	integer
MS_EMBED	integer

Map Units

Name	Type
MS_DD	integer
MS_FEET	integer
MS_INCHES	integer
MS_METERS	integer
MS_MILES	integer
MS_NAUTICALMILES	integer
MS_PIXELS	integer

Layer Types

Name	Type
MS_LAYER_ANNOTATION (deprecated since 6.2)	integer
MS_LAYER_CIRCLE	integer
MS_LAYER_LINE	integer
MS_LAYER_POINT	integer
MS_LAYER_POLYGON	integer
MS_LAYER_QUERY	integer
MS_LAYER_RASTER	integer
MS_LAYER_TILEINDEX	integer

Label Positions

Name	Type
MS_AUTO	integer
MS_CC	integer
MS_CL	integer
MS_CR	integer
MS_LC	integer
MS_LL	integer
MS_LR	integer
MS_UC	integer
MS_UL	integer
MS_UR	integer

Label Size (Bitmap only)

Name	Type
MS_GIANT	integer
MS_LARGE	integer
MS_MEDIUM	integer
MS_SMALL	integer
MS_TINY	integer

Shape Types

Name	Type
MS_SHAPE_LINE	integer
MS_SHAPE_NULL	integer
MS_SHAPE_POINT	integer
MS_SHAPE_POLYGON	integer

Measured Shape Types

Name	Type
MS_SHP_ARCM	integer
MS_SHP_MULTIPOINTM	integer
MS_SHP_POINTM	integer
MS_SHP_POLYGONM	integer

Shapefile Types

Name	Type
MS_SHAPEFILE_ARC	integer
MS_SHAPEFILE_MULTIPOINT	integer
MS_SHAPEFILE_POINT	integer
MS_SHAPEFILE_POLYGON	integer

Query Types

Name	Type
MS_MULTIPLE	integer
MS_SINGLE	integer

File Types

Name	Type
MS_FILE_MAP	integer
MS_FILE_SYMBOL	integer

Querymap Styles

Name	Type
MS_HILITE	integer
MS_NORMAL	integer
MS_SELECTED	integer

Connection Types

Name	Typ
MS_GRATICULE	integer
MS_INLINE	integer
MS_MYGIS	integer
MS_OGR	integer
MS_ORACLESPATIAL	integer
MS_POSTGIS	integer
MS_RASTER	integer
MS_SDE	integer
MS_SHAPEFILE	integer
MS_TILED_SHAPEFILE	integer
MS_WFS	integer
MS_WMS	integer

DB Connection Types

Name	Type
MS_DB_CSV	integer
MS_DB_MYSQL	integer
MS_DB_ORACLE	integer
MS_DB_POSTGRES	integer
MS_DB_XBASE	integer

Join Types

Name	Type
MS_JOIN_ONE_TO_MANY	integer
MS_JOIN_ONE_TO_ONE	integer

Line Join Types (for rendering)

Name	Type
MS_CJC_BEVEL	integer
MS_CJC_BUTT	integer
MS_CJC_MITER	integer
MS_CJC_NONE	integer
MS_CJC_ROUND	integer
MS_CJC_SQUARE	integer
MS_CJC_TRIANGLE	integer

Image Types

Name	Type
GD/GIF	integer
GD/JPEG	integer
GD/PNG	integer
GD/PNG24	integer
GD/WBMP	integer
GDAL/GTiff	integer
imagemap	integer
pdf	integer
swf	integer

Image Modes

Name	Type
MS_GD_ALPHA	integer
MS_IMAGEMODE_BYTE	integer
MS_IMAGEMODE_FLOAT32	integer
MS_IMAGEMODE_INT16	integer
MS_IMAGEMODE_NULL	integer
MS_IMAGEMODE_PC256	integer
MS_IMAGEMODE_RGB	integer
MS_IMAGEMODE_RGBA	integer
MS_NOOVERRIDE	integer

Symbol Types

Name	Type
MS_SYMBOL_ELLIPSE	integer
MS_SYMBOL_PIXMAP	integer
MS_SYMBOL_SIMPLE	integer
MS_SYMBOL_TRUETYPE	integer
MS_SYMBOL_VECTOR	integer

Return Codes

Name	Type
MS_DONE	integer
MS_FAILURE	integer
MS_SUCCESS	integer

Limiters

Name	Type
MS_IMAGECACHESIZE	long
MS_MAXSTYLELENGTH	long
MS_MAXSYMBOLS	long
MS_MAXVECTORPOINTS	long

Error Return Codes

Name	Type
MESSAGELENGTH	long
MS_CGIERR	long
MS_CHILDERR	long
MS_DBFERR	long
MS_EOFERR	long
MS_GDERR	long
MS_HASHERR	long
MS_HTTPERR	long
MS_IDENTERR	long
MS_IMGERR	long
MS_IOERR	long
MS_JOINERR	long
MS_MAPCONTEXTERR	long
MS_MEMERR	long
MS_MISCERR	long
MS_NOERR	long
MS_NOTFOUND	long
MS_NUMERRORCODES	long
MS_OGRERR	long
MS_ORACLESPATIALERR	long
MS_PARSEERR	long
MS_PROJERR	long
MS_QUERYERR	long
MS_REGEXERR	long
MS_SDEERR	long
MS_SHPERR	long
MS_SYMERR	long
MS_TTFERR	long
MS_TYPEERR	long
MS_WCSERR	long
MS_WEBERR	long
MS_WFSCONNERR	long
MS_WFSERR	long
MS_WMSCONNERR	long
MS_WMSERR	long
ROUTINELENGTH	long

MapScript Functions

msCleanup()void

msCleanup() attempts to recover all dynamically allocated resources allocated by MapServer code and dependent libraries. It it used primarily for final cleanup in scripts that need to do memory leak testing to get rid of «noise» one-time allocations. It should not normally be used by production code.

msGetVersion()string

Returns a string containing MapServer version information, and details on what optional components are built in. The same report as produced by «mapserv -v».

msGetVersionInt()int

Returns the MapServer version number (x.y.z) as an integer (x*10000 + y*100 + z). (New in v5.0) e.g. V5.4.3 would return 50403.

msIO_getStdoutBufferBytes()binary data

Fetch the current stdout buffer contents as a binary buffer. The exact form of this buffer will vary by mapscript language (eg. string in Python, byte[] array in Java and C#, unhandled in perl)

msIO_getStdoutBufferString()string

Fetch the current stdout buffer contents as a string. This method does not clear the buffer.

msIO_installStdinFromBuffer()void

Installs a mapserver IO handler directing future stdin reading (ie. post request capture) to come from a buffer.

msIO_installStdoutToBuffer()void

Installs a mapserver IO handler directing future stdout output to a memory buffer.

msIO_resetHandlers()void

Resets the default stdin and stdout handlers in place of «buffer» based handlers.

msIO_stripStdoutBufferContentHeaders(): void

Strip all Content-* headers off the stdout buffer if it has ones.

msIO_stripStdoutBufferContentType()string

Strip the Content-type header off the stdout buffer if it has one, and if a content type is found it is return (otherwise NULL/None/etc).

msResetErrorList()void

Clears the current error stack.

MapScript Classes

classObj

An instance of classObj is associated with with one instance of layerObj:

+-------+ 0..*     1 +-------+
| Class | <--------> | Layer |
+-------+            +-------+

The other important associations for classObj are with styleObj, labelObj, and hashTableObj:

+-------+ 1     0..* +-------+
| Class | ---------> | Style |
+-------+            +-------+

+-------+ 1     0..* +-------+
| Class | ---------> | Label |
+-------+            +-------+

+-------+ 1        1 +-----------+
| Class | ---------> | HashTable |
+-------+            |    --     |
                     | metadata  |
                     +-----------+

Multiple class styles have been supported since 4.1, and multiple class labels since 6.2. See the styleObj section for details on use of multiple class styles.

classObj Attributes

debugint

MS_TRUE or MS_FALSE

См.также

Debugging MapServer

keyimagestring

TODO Not sure what this attribute is for

labellabelObj immutable

Definition of class labeling. Removed (6.2) - use addLabel, getLabel and removeLabel instead.

layerlayerObj immutable

Reference to the parent layer

maxscaledenomfloat

The minimum scale at which class is drawn

metadatahashTableObj immutable

class metadata hash table.

minscaledenomfloat

The maximum scale at which class is drawn

namestring

Unique within a layer

numlabelsint

Добавлено в версии 6.2.

Number of labels for class.

numstylesint

Number of styles for class. In the future, probably the 4.4 release, this attribute will be made immutable.

statusint

MS_ON or MS_OFF. Draw features of this class or do not.

templatestring

Template for queries

titlestring

Text used for legend labeling

typeint

The layer type of its parent layer

classObj Methods

new classObj( [ layerObj parent_layer=NULL ] )classObj

Create a new child classObj instance at the tail (highest index) of the class array of the parent_layer. A class can be created outside the context of a parent layer by omitting the single constructor argument.

addLabel( labelObj )int

Добавлено в версии 6.2.

Add a labelObj to the classObj and return its index in the labels array.

clone( )classObj

Return an independent copy of the class without a parent layer.

convertToString()string

Добавлено в версии 6.4.

Saves the object to a string. Provides the inverse option for updateFromString.

createLegendIcon( mapObj map, layerObj layer, int width, int height )imageObj

Draw and return a new legend icon.

drawLegendIcon( mapObj map, layerObj layer, int width, int height, imageObj image, int dstx, int dsty )int

Draw the legend icon onto image at dstx, dsty. Returns MS_SUCCESS or MS_FAILURE.

getExpressionString()string

Return a string representation of the expression enclosed in the quote characters appropriate to the expression type.

getFirstMetaDataKey()string

Returns the first key in the metadata hash table. With getNextMetaDataKey(), provides an opaque iterator over keys.

Примечание

getFirstMetaDataKey(), getMetaData(), and getNextMetaDataKey() are deprecated and will be removed in a future version. Replaced by direct metadata access, see hashTableObj.

getLabel( int index )labelObj

Добавлено в версии 6.2.

Return a reference to the labelObj at index in the labels array.

See the labelObj section for more details on multiple class labels.

getMetaData( string key )string

Return the value of the classObj metadata at key.

Примечание

getFirstMetaDataKey(), getMetaData(), and getNextMetaDataKey() are deprecated and will be removed in a future version. Replaced by direct metadata access, see hashTableObj.

getNextMetaDataKey( string lastkey )string

Returns the next key in the metadata hash table or NULL if lastkey is the last valid key. If lastkey is NULL, returns the first key of the metadata hash table.

Примечание

getFirstMetaDataKey(), getMetaData(), and getNextMetaDataKey() are deprecated and will be removed in a future version. Replaced by direct metadata access, see hashTableObj.

getStyle( int index )styleObj

Return a reference to the styleObj at index in the styles array.

See the styleObj section for more details on multiple class styles.

getTextString()string

Return a string representation of the text enclosed in the quote characters appropriate to the text expression type (logical or simple string).

insertStyle( styleObj style [, int index=-1 ] )int

Insert a copy of style into the styles array at index index. Default is -1, or the end of the array. Returns the index at which the style was inserted.

moveStyleDown( int index )int

Swap the styleObj at index with the styleObj index + 1.

moveStyleUp( int index )int

Swap the styleObj at index with the styleObj index - 1.

removeLabel( int index )labelObj

Добавлено в версии 6.2.

Remove the labelObj at index from the labels array and return a reference to the labelObj. numlabels is decremented, and the array is updated.

removeStyle( int index )styleObj

Remove the styleObj at index from the styles array and return a copy.

setExpression( string expression )int

Set expression string where expression is a MapServer regular, logical or string expression. Returns MS_SUCCESS or MS_FAILUIRE.

setMetaData( string key, string value )int

Insert value into the classObj metadata at key. Returns MS_SUCCESS or MS_FAILURE.

Примечание

setMetaData() is deprecated and will be removed in a future version. Replaced by direct metadata access, see hashTableObj.

setText( string text )int

Set text string where text is a MapServer text expression. Returns MS_SUCCESS or MS_FAILUIRE.

Примечание

Older versions of MapScript (pre-4.8) featured the an undocumented setText() method that required a layerObj be passed as the first argument. That argument was completely bogus and has been removed.

colorObj

Since the 4.0 release, MapServer colors are instances of colorObj. A colorObj may be a lone object or an attribute of other objects and have no other associations.

colorObj Attributes

alphaint

Alpha (opacity) component of color in range [0-255]

blueint

Blue component of color in range [0-255]

greenint

Green component of color in range [0-255]

redint

Red component of color in range [0-255]

colorObj Methods

new colorObj( [ int red=0, int green=0, int blue=0, int alpha=255 ] )colorObj

Create a new instance. The color arguments are optional.

setHex( string hexcolor )int

Set the color to values specified in case-independent hexadecimal notation. hex must start with a „#“ followed by three or four hex bytes, e.g. „#ffffff“ or „#ffffffff“. If only three hex bytes are supplied, the alpha will be set to 255. Calling setHex(„#ffffff“) therefore assigns values of 255 to each color component, including the alpha. Returns MS_SUCCESS or MS_FAILURE.

setRGB( int red, int green, int blue, int alpha=255 )int

Set all four RGBA components. Returns MS_SUCCESS or MS_FAILURE.

toHex()string

Complement to setHex, returning a hexadecimal representation of the color components. If alpha is 255 then this is three hex bytes «#rrggbb», otherwise four hex bytes «#rrggbbaa».

errorObj

This class allows inspection of the MapServer error stack. Only needed for the Perl module as the other language modules expose the error stack through exceptions.

errorObj Attributes

codeint

MapServer error code such as MS_IMGERR (1).

messagestring

Context-dependent error message.

routinestring

MapServer function in which the error was set.

errorObj Methods

nexterrorObj

Returns the next error in the stack or NULL if the end has been reached.

fontSetObj

A fontSetObj is always a „fontset“ attribute of a mapObj.

fontSetObj Attributes

filenamestring immutable

Path to the fontset file on disk.

fontshashTableObj immutable

Mapping of fonts.

numfontsint immutable

Number of fonts in set.

fontSetObj Methods

None

hashTableObj

A hashTableObj is a very simple mapping of case-insensitive string keys to single string values. Map, Layer, and Class metadata have always been hash hables and now these are exposed directly. This is a limited hash that can contain no more than 41 values.

hashTableObj Attributes

numitemsint immutable

Number of hash items.

hashTableObj Methods

clear( )void

Empties the table of all items.

get( string key [, string default=NULL ] )string

Returns the value of the item by its key, or default if the key does not exist.

nextKey( [string key=NULL] )string

Returns the name of the next key or NULL if there is no valid next key. If the input key is NULL, returns the first key.

remove( string key )int

Removes the hash item by its key. Returns MS_SUCCESS or MS_FAILURE.

set( string key, string value )int

Sets a hash item. Returns MS_SUCCESS or MS_FAILURE.

imageObj

An image object is a wrapper for GD and GDAL images.

imageObj Attributes

formatoutputFormatObj immutable

Image format.

heightint immutable

Image height in pixels.

imagepathstring immutable

If image is drawn by mapObj.draw(), this is the mapObj’s web.imagepath.

imageurlstring immutable

If image is drawn by mapObj.draw(), this is the mapObj’s web.imageurl.

rendererint

MS_RENDER_WITH_GD, MS_RENDER_WITH_SWF, MS_RENDER_WITH_RAWDATA, MS_RENDER_WITH_PDF, or MS_RENDER_WITH_IMAGEMAP. Don’t mess with this!

sizeint immutable

To access this attribute use the getSize method.

Примечание

the getSize method is inefficient as it does a call to getBytes and then computes the size of the byte array. The bytearray is then immediately discarded. In most cases it is more efficient to call getBytes directly.

widthint immutable

Image width in pixels.

imageObj Methods

new imageObj( int width, int height [, outputFormatObj format=NULL [, string filename=NULL ] ] )imageObj

Create new instance of imageObj. If filename is specified, an imageObj is created from the file and any specified width, height, and format parameters will be overridden by values of the image in filename. Otherwise, if format is specified an imageObj is created using that format. See the format attribute above for details. If filename is not specified, then width and height should be specified.

getBytes()binary data

Returns the image contents as a binary buffer. The exact form of this buffer will vary by mapscript language (eg. string in Python, byte[] array in Java and C#, unhandled in perl)

getSize()int

Resturns the size of the binary buffer representing the image buffer.

Примечание

the getSize method is inefficient as it does a call to getBytes and then computes the size of the byte array. The byte array is then immediately discarded. In most cases it is more efficient to call getBytes directly.

save( string filename [, mapObj parent_map=NULL ] )int

Save image to filename. The optional parent_map parameter must be specified if saving GeoTIFF images.

write( [ FILE file=NULL ] )int

Write image data to an open file descriptor or, by default, to stdout. Returns MS_SUCCESS or MS_FAILURE.

Примечание

This method is current enabled for Python and C# only. C# supports writing onto a Stream object. User-contributed typemaps are needed for Perl, Ruby, and Java.

Примечание

The free() method of imageObj has been deprecated. In MapServer revisions 4+ all instances of imageObj will be properly disposed of by the interpreter’s garabage collector. If the application can’t wait for garabage collection, then the instance can simply be deleted or undef’d.

intarray

An intarray is a utility class generated by SWIG useful for manipulating map layer drawing order. See mapObj::getLayersDrawingOrder for discussion of mapscript use and see http://www.swig.org/Doc1.3/Library.html#Library_nn5 for a complete reference.

intarray Attributes

None

intarray Methods

new intarray( int numitems )intarray

Returns a new instance of the specified length.

labelCacheMemberObj

An individual feature label. The labelCacheMemberObj class is associated with labelCacheObj:

+------------------+ 0..*     1 +------------+
| LabelCacheMember | <--------- | LabelCache |
+------------------+            +------------+

labelCacheMemberObj Attributes

classindexint immutable

Index of the class of the labeled feature.

featuresizefloat immutable

TODO

labellabelObj immutable

Copied from the class of the labeled feature.

layerindexint immutable

The index of the layer of the labeled feature.

numstylesint immutable

Number of styles as for the class of the labeled feature.

pointpointObj immutable

Label point.

polyshapeObj immutable

Label bounding box.

shapeindexint immutable

Index within shapefile of the labeled feature.

statusint immutable

Has the label been drawn or not?

stylesstyleObj immutable

TODO this should be protected from SWIG.

textstring immutable

Label text.

tileindexint immutable

Tileindex of the layer of the labeled feature.

labelCacheMemberObj Methods

None.

Примечание

No real scripting control over labeling currently, but there may be some interesting new possibilities if users have control over labeling text, position, and status.

labelCacheObj

Set of a map’s cached labels. Has no other existence other than as a „labelcache“ attribute of a mapObj. Associated with labelCacheMemberObj and markerCacheMemberObj:

+------------+ 1     0..* +-------------------+
| LabelCache | ---------> | LabelCacheMember  |
+------------+            + ----------------- +
                          | MarkerCacheMember |
                          +-------------------+

labelCacheObj Attributes

cachesizeint immutable

TODO

markercachesizeint immutable

TODO

numlabelsint immutable

Number of label members.

nummarkersint immutable

Number of marker members.

labelCacheObj Methods

freeCache( )void

Free the labelcache.

labelObj

A labelObj is associated with a classObj, a scalebarObj, or a legendObj:

+-------+ 0..1     1 +----------+
| Label | <--------- | Scalebar |
+-------+            | -------- |
                     | Legend   |
                     +----------+

+-------+ 0..*     1 +-------+
| Label | <--------- | Class |
+-------+            +-------+

An instance of labelObj can exist outside of a classObj container and be explicitly inserted into the classObj:

new_label = new labelObj()
the_class.addLabel(new_label)

labelObj Attributes

anglefloat

TODO

antialiasint

MS_TRUE or MS_FALSE

autoangleint

MS_TRUE or MS_FALSE

autofollowint

MS_TRUE or MS_FALSE. Tells mapserver to compute a curved label for appropriate linear features (see MS RFC 11: Support for Curved Labels for specifics).

autominfeaturesize: int

MS_TRUE or MS_FALSE

backgroundcolorcolorObj

Не рекомендуется, начиная с версии 6.0: Use styleObj and geomtransform.

Color of background rectangle or billboard.

backgroundshadowcolorcolorObj

Не рекомендуется, начиная с версии 6.0: Use styleObj and geomtransform.

Color of background rectangle or billboard shadow.

backgroundshadowsizexint

Не рекомендуется, начиная с версии 6.0: Use styleObj and geomtransform.

Horizontal offset of drop shadow in pixels.

backgroundshadowsizeyint

Не рекомендуется, начиная с версии 6.0: Use styleObj and geomtransform.

Vertical offset of drop shadow in pixels.

bufferint

Maybe this should’ve been named „padding“ since that’s what it is: padding in pixels around a label.

colorcolorObj

Foreground color.

encodingstring

Supported encoding format to be used for labels. If the format is not supported, the label will not be drawn. Requires the iconv library (present on most systems). The library is always detected if present on the system, but if not the label will not be drawn. Required for displaying international characters in MapServer. More information can be found at: https://mapserver.org/mapfile/encoding.html

fontstring

Name of TrueType font.

forceint

MS_TRUE or MS_FALSE.

maxsizeint

Maximum height in pixels for scaled labels. See symbolscale attribute of layerObj.

mindistanceint

Minimum distance in pixels between duplicate labels.

minfeaturesizeint

Features of this size of greater will be labeled.

minsizeint

Minimum height in pixels.

numstylesint

Number of label styles

offsetxint

Horizontal offset of label.

offsetyint

Vertical offset of label.

outlinecolorcolorObj

Color of one point outline.

partialsint

MS_TRUE or MS_FALSE (default). Whether or not labels can flow past the map edges.

Примечание

The default changed from true to false, since the MapServer 7.2 release.

positionint

MS_UL, MS_UC, MS_UR, MS_CL, MS_CC, MS_CR, MS_LL, MS_LC, MS_LR, or MS_AUTO.

shadowcolorcolorObj

Color of drop shadow.

shadowsizexint

Horizontal offset of drop shadow in pixels.

shadowsizeyint

Vertical offset of drop shadow in pixels.

sizeint

Annotation height in pixels.

type : removed in version 7.0. All labels are truetype.

wrapstring

Character on which legend text will be broken to make multi-line legends.

labelObj Methods

convertToString()string

Добавлено в версии 6.4.

Saves the object to a string. Provides the inverse option for updateFromString.

getBinding( int binding )string

Get the attribute binding for a specified label property. Returns NULL if there is no binding for this property.

getExpressionString( )string

Returns the label expression string.

getStyle( int index )styleObj

Return a reference to the styleObj at index in the styles array.

getTextString( )string

Returns the label text string.

insertStyle( styleObj style [, int index=-1 ] )int

Insert a copy of style into the styles array at index index. Default is -1, or the end of the array. Returns the index at which the style was inserted.

moveStyleDown( int index )int

Swap the styleObj at index with the styleObj index + 1.

moveStyleUp( int index )int

Swap the styleObj at index with the styleObj index - 1.

removeBinding( int binding )int

Remove the attribute binding for a specfiled label property.

removeStyle( int index )styleObj

Remove the styleObj at index from the styles array and return a copy.

setBinding ( int binding, string item )int

Set the attribute binding for a specified label property. Binding constants look like this: MS_LABEL_BINDING_[attribute name]:

setBinding(MS_LABEL_BINDING_COLOR, "FIELD_NAME_COLOR");

setExpression( string expression )int

Set the label expression.

setText( string text )int

Set the label text.

updateFromString ( string snippet )int

Update a label from a string snippet. Returns MS_SUCCESS/MS_FAILURE.

layerObj

A layerObj is associated with mapObj. In the most recent revision, an instance of layerObj can exist outside of a mapObj:

+-------+ 0..*  0..1 +-----+
| Layer | <--------> | Map |
+-------+            +-----+

The other important association for layerObj is with classObj:

+-------+ 1     0..* +-------+
| Layer | <--------> | Class |
+-------+            +-------+

and hashTableObj:

+-------+ 1        1 +-----------+
| Layer | ---------> | HashTable |
+-------+            |    --     |
                     | metadata  |
                     +-----------+

layerObj Attributes

bandsitemstring

The attribute from the index file used to select the source raster band(s) to be used. Normally NULL for default bands processing.

classitemstring

The attribute used to classify layer data.

connectionstring

Layer connection or DSN.

connectiontypeint

See MS_CONNECTION_TYPE in mapserver.h for possible values. When setting the connection type setConnectionType() should be used in order to initialize the layer vtable properly.

datastring

Layer data definition, values depend upon connectiontype.

debugint

Enable debugging of layer. MS_ON or MS_OFF (default).

См.также

Debugging MapServer

dumpint

Не рекомендуется, начиная с версии 6.0: use metadata instead.

Since 6.0, dump is not available anymore. Use metadata is instead.

Switch to allow mapserver to return data in GML format. MS_TRUE or MS_FALSE. Default is MS_FALSE.

extentrectObj

optional limiting extent for layer features.

filteritemstring

Attribute defining filter.

footerstring

TODO

groupstring

Name of a group of layers.

headerstring

TODO

indexint immutable

Index of layer within parent map’s layers array.

labelangleitemstring

Attribute defining label angle.

labelcacheint

MS_ON or MS_OFF. Default is MS_ON.

labelitemstring

Attribute defining feature label text.

labelmaxscaledenomfloat

Minimum scale at which layer will be labeled.

labelminscaledenomfloat

Maximum scale at which layer will be labeled.

labelrequiresstring

Logical expression.

labelsizeitemstring

Attribute defining label size.

mapmapObj immutable

Reference to parent map.

maskstring

Layer name for masking. (MS RFC 79: Layer Masking)

maxfeaturesint

Maximum number of layer features that will be drawn. For shapefile data this means the first N features where N = maxfeatures.

maxscaledenomfloat

Minimum scale at which layer will be drawn.

metadatahashTableObj immutable

Layer metadata.

minscaledenomfloat

Maximum scale at which layer will be drawn.

namestring

Unique identifier for layer.

numclassesint immutable

Number of layer classes.

numitemsint immutable

Number of layer feature attributes (items).

numjoinsint immutable

Number of layer joins.

numprocessingint immutable

Number of raster processing directives.

offsitecolorObj

transparent pixel value for raster layers.

opacityint

Layer opacity percentage in range [0, 100]. The special value of MS_GD_ALPHA (1000) indicates that the alpha transparency of pixmap symbols should be honored, and should be used only for layers that use RGBA pixmap symbols.

Примечание

opacity is deprecated as of MapServer 7.0 and should instead be managed through the layer’s COMPOSITE block (see also the layerObj’s setOpacity() & getOpacity() methods below).

postlabelcacheint

MS_TRUE or MS_FALSE. Default is MS_FALSE.

requiresstring

Logical expression.

sizeunitsint

Units of class size values. MS_INCHES, MS_FEET, MS_MILES, MS_NAUTICALMILES, MS_METERS, MS_KILOMETERS, MS_DD or MS_PIXELS

statusint

MS_ON, MS_OFF, or MS_DEFAULT.

styleitemstring

Attribute defining styles.

symbolscaledenomfloat

Scale at which symbols are default size.

templatestring

Template file. Note that for historical reasons, the query attribute must be non-NULL for a layer to be queryable.

tileindexstring

Layer index file for tiling support.

tileitemstring

Attribute defining tile paths.

tolerancefloat

Search buffer for point and line queries.

toleranceunitsint

MS_INCHES, MS_FEET, MS_MILES, MS_NAUTICALMILES, MS_METERS, MS_KILOMETERS, MS_DD or MS_PIXELS

transformint

Whether or not layer data is to be transformed to image units. MS_TRUE or MS_FALSE. Default is MS_TRUE. Case of MS_FALSE is for data that are in image coordinates such as annotation points.

typeint

See MS_LAYER_TYPE in mapserver.h.

unitsint

Units of the layer. See MS_UNITS in mapserver.h.

layerObj Methods

new layerObj( [ mapObj parent_map=NULL ] )layerObj

Create a new layerObj in parent_map. The layer index of the new layerObj will be equal to the parent_map numlayers - 1. The parent_map arg is now optional and Layers can exist outside of a Map.

addFeature( shapeObj shape )int

Add a new inline feature on a layer. Returns -1 on error. TODO: Is this similar to inline features in a mapfile? Does it work for any kind of layer or connection type?

addProcessing( string directive )void

Adds a new processing directive line to a layer, similar to the PROCESSING directive in a map file. Processing directives supported are specific to the layer type and underlying renderer.

applySLD( string sld, string stylelayer )int

Apply the SLD document to the layer object. The matching between the sld document and the layer will be done using the layer’s name. If a namedlayer argument is passed (argument is optional), the NamedLayer in the sld that matchs it will be used to style the layer. See SLD HOWTO for more information on the SLD support.

applySLDURL( string sld, string stylelayer )int

Apply the SLD document pointed by the URL to the layer object. The matching between the sld document and the layer will be done using the layer’s name. If a namedlayer argument is passed (argument is optional), the NamedLayer in the sld that matchs it will be used to style the layer. See SLD HOWTO for more information on the SLD support.

clearProcessing()int

Clears the layer’s raster processing directives. Returns the subsequent number of directives, which will equal MS_SUCCESS if the directives have been cleared.

clone()layerObj

Return an independent copy of the layer with no parent map.

close()void

Close the underlying layer.

convertToString()string

Добавлено в версии 6.4.

Saves the object to a string. Provides the inverse option for updateFromString.

Примечание

demote() is removed in MapServer 4.4

draw( mapObj map, imageObj image )int

Renders this layer into the target image, adding labels to the cache if required. Returns MS_SUCCESS or MS_FAILURE. TODO: Does the map need to be the map on which the layer is defined? I suspect so.

drawQuery( mapObj map, imageObj image ) :

Draw query map for a single layer into the target image. Returns MS_SUCCESS or MS_FAILURE.

executeWFSGetFeature( layer )string

Executes a GetFeature request on a WFS layer and returns the name of the temporary GML file created. Returns an empty string on error.

generateSLD()void

Returns an SLD XML string based on all the classes found in the layer (the layer must have STATUS on).

getClass( int i )classObj

Fetch the requested class object. Returns NULL if the class index is out of the legal range. The numclasses field contains the number of classes available, and the first class is index 0.

getExtent()rectObj

Fetches the extents of the data in the layer. This normally requires a full read pass through the features of the layer and does not work for raster layers.

getFeature( int shapeindex [, int tileindex=-1 ] )shapeObj

Return the layer feature at shapeindex and tileindex.

Примечание

getFeature has been removed as of version 6.0 and replaced by getShape

getFilterString()string

Returns the current filter expression.

getFirstMetaDataKey()string

Returns the first key in the metadata hash table. With getNextMetaDataKey(), provides an opaque iterator over keys.

Примечание

getFirstMetaDataKey(), getMetaData(), and getNextMetaDataKey() are deprecated and will be removed in a future version. Replaced by direct metadata access, see hashTableObj.

getItem( int i )string

Returns the requested item. Items are attribute fields, and this method returns the item name (field name). The numitems field contains the number of items available, and the first item is index zero.

getMetaData( string key )string

Return the value at key from the metadata hash table.

Примечание

getFirstMetaDataKey(), getMetaData(), and getNextMetaDataKey() are deprecated and will be removed in a future version. Replaced by direct metadata access, see hashTableObj.

getNextMetaDataKey( string lastkey )string

Returns the next key in the metadata hash table or NULL if lastkey is the last valid key. If lastkey is NULL, returns the first key of the metadata hash table.

Примечание

getFirstMetaDataKey(), getMetaData(), and getNextMetaDataKey() are deprecated and will be removed in a future version. Replaced by direct metadata access, see hashTableObj.

getNumFeatures()int

Returns the number of inline features in a layer. TODO: is this really only online features or will it return the number of non-inline features on a regular layer?

getNumResults()int

Returns the number of entries in the query result cache for this layer.

getOpacity()int

Returns the opacity value for the layer.

getProcessing( int index)string

Return the raster processing directive at index.

getProjection( )string

Returns the PROJ definition of the layer’s projection.

getResult( int i )resultCacheMemberObj

Fetches the requested query result cache entry, or NULL if the index is outside the range of available results. This method would normally only be used after issuing a query operation.

getResults()resultCacheObj

Returns a reference to layer’s result cache. Should be NULL prior to any query, or after a failed query or query with no results.

getResultsBounds()rectObj

Returns the bounds of the features in the result cache.

getShape( resultCacheMemberObj result )int

Get a shape from layer data. Argument is a result cache member from layerObj::getResult(i)

getWMSFeatureInfoURL( mapObj map, int click_x, int click_y, int feature_count, string info_format )string

Return a WMS GetFeatureInfo URL (works only for WMS layers) clickX, clickY is the location of to query in pixel coordinates with (0,0) at the top left of the image. featureCount is the number of results to return. infoFormat is the format the format in which the result should be requested. Depends on remote server’s capabilities. MapServer WMS servers support only «MIME» (and should support «GML.1» soon). Returns «» and outputs a warning if layer is not a WMS layer or if it is not queriable.

insertClass( classObj class [, int index=-1 ] )int

Insert a copy of the class into the layer at the requested index. Default index of -1 means insertion at the end of the array of classes. Returns the index at which the class was inserted.

isVisible( )int

Returns MS_TRUE or MS_FALSE after considering the layer status, minscaledenom, and maxscaledenom within the context of the parent map.

moveClassDown( int class )int

The class specified by the class index will be moved up into the array of layers. Returns MS_SUCCESS or MS_FAILURE. ex. moveClassDown(1) will have the effect of moving class 1 down to position 2, and the class at position 2 will be moved to position 1.

moveClassUp( int class )int

The class specified by the class index will be moved up into the array of layers. Returns MS_SUCCESS or MS_FAILURE. ex. moveClassUp(1) will have the effect of moving class 1 up to position 0, and the class at position 0 will be moved to position 1.

nextShape( )shapeObj

Called after msWhichShapes has been called to actually retrieve shapes within a given area returns a shape object or MS_FALSE

example of usage:

mapObj map = new mapObj("d:/msapps/gmap-ms40/htdocs/gmap75.map");
layerObj layer = map.getLayerByName('road');
int status = layer.open();
status = layer.whichShapes(map.extent);
shapeObj shape;
while ((shape = layer.nextShape()) != null)
{
  ...
}
layer.close();

open()void

Opens the underlying layer. This is required before operations like getFeature() will work, but is not required before a draw or query call.

Примечание

promote() is eliminated in MapServer 4.4.

queryByAttributes( mapObj map, string qitem, string qstring, int mode )int

Query layer for shapes that intersect current map extents. qitem is the item (attribute) on which the query is performed, and qstring is the expression to match. The query is performed on all the shapes that are part of a CLASS that contains a TEMPLATE value or that match any class in a layer that contains a LAYER TEMPLATE value.

Note that the layer’s FILTER/FILTERITEM are ignored by this function. Mode is MS_SINGLE or MS_MULTIPLE depending on number of results you want. Returns MS_SUCCESS if shapes were found or MS_FAILURE if nothing was found or if some other error happened.

queryByFeatures( mapObj map, int slayer )int

Perform a query set based on a previous set of results from another layer. At present the results MUST be based on a polygon layer. Returns MS_SUCCESS if shapes were found or MS_FAILURE if nothing was found or if some other error happened

queryByIndex( mapObj map, int shapeindex, int tileindex [, int bAddToQuery=MS_FALSE ])int

Pop a query result member into the layer’s result cache. By default clobbers existing cache. Returns MS_SUCCESS or MS_FAILURE.

queryByPoint( mapObj map, pointObj point, int mode, float buffer )int

Query layer at point location specified in georeferenced map coordinates (i.e. not pixels). The query is performed on all the shapes that are part of a CLASS that contains a TEMPLATE value or that match any class in a layer that contains a LAYER TEMPLATE value. Mode is MS_SINGLE or MS_MULTIPLE depending on number of results you want. Passing buffer <=0 defaults to tolerances set in the map file (in pixels) but you can use a constant buffer (specified in ground units) instead. Returns MS_SUCCESS if shapes were found or MS_FAILURE if nothing was found or if some other error happened.

queryByRect( mapObj map, rectObj rect )int

Query layer using a rectangle specified in georeferenced map coordinates (i.e. not pixels). The query is performed on all the shapes that are part of a CLASS that contains a TEMPLATE value or that match any class in a layer that contains a LAYER TEMPLATE value. Returns MS_SUCCESS if shapes were found or MS_FAILURE if nothing was found or if some other error happened.

queryByShape( mapObj map, shapeObj shape )int

Query layer based on a single shape, the shape has to be a polygon at this point. Returns MS_SUCCESS if shapes were found or MS_FAILURE if nothing was found or if some other error happened

removeClass( int index )classObj

Removes the class indicated and returns a copy, or NULL in the case of a failure. Note that subsequent classes will be renumbered by this operation. The numclasses field contains the number of classes available.

removeMetaData( string key )int

Delete the metadata hash at key. Returns MS_SUCCESS or MS_FAILURE.

Примечание

removeMetaData() is deprecated and will be removed in a future version. Replaced by direct metadata access, see hashTableObj.

resultsGetShape(int shapeindex [, int tileindex = -1])shapeObj

Retrieve shapeObj from a layer’s resultset by index. Tileindex is optional and is used only for tiled shapefiles, Simply omit or pass tileindex = -1 for other data sources. Added in MapServer 5.6.0 due to the one-pass query implementation.

setConnectionType(int connectiontype, string library_str)int

Changes the connectiontype of the layer and recreates the vtable according to the new connection type. This method should be used instead of setting the connectiontype parameter directly. In case when the layer.connectiontype = MS_PLUGIN the library_str parameter should also be specified so as to select the library to load by mapserver. For the other connection types this parameter is not used.

setExtent( float minx, float miny, float maxx, float maxy )int

Sets the extent of a layer. Returns MS_SUCCESS or MS_FAILURE.

setFilter( string filter )int

Sets a filter expression similarly to the FILTER expression in a map file. Returns MS_SUCCESS on success or MS_FAILURE if the expression fails to parse.

setMetaData( string key, string value )int

Assign value to the metadata hash at key. Return MS_SUCCESS or MS_FAILURE.

Примечание

setMetaData() is deprecated and will be removed in a future version. Replaced by direct metadata access, see hashTableObj.

setOpacity( string opacity )int

Sets an opacity for the layer, where the value is an integer in range [0, 100]. A new COMPOSITE block is generated, containing this OPACITY value.

setProcessingKey( string key, string value )void

Adds or replaces a processing directive of the form «key=value». Unlike the addProcessing() call, this will replace an existing processing directive for the given key value. Processing directives supported are specific to the layer type and underlying renderer.

setProjection( string proj4 )int

Set the layer projection using a PROJ format projection definition (ie. «+proj=utm +zone=11 +datum=WGS84» or «init=EPSG:26911»). Returns MS_SUCCESS or MS_FAILURE.

setWKTProjection( string wkt )int

Set the layer projection using OpenGIS Well Known Text format. Returns MS_SUCCESS or MS_FAILURE.

whichShapes( rectObj rect )int

Performs a spatial, and optionally an attribute based feature search. The function basically prepares things so that candidate features can be accessed by query or drawing functions (eg using nextShape function). Returns MS_SUCCESS, MS_FAILURE or MS_DONE. MS_DONE is returned if the layer extent does not overlap rect.

legendObj

legendObj is associated with mapObj:

+--------+ 0..1     1 +-----+
| Legend | <--------> | Map |
+--------+            +-----+

and with labelObj:

+--------+ 1        1 +-------+
| Legend | ---------> | Label |
+--------+            +-------+

legendObj Attributes

heightint

Legend height.

imagecolorcolorObj

Legend background color.

keysizexint

Width in pixels of legend keys.

keysizeyint

Pixels.

keyspacingxint

Horizontal padding around keys in pixels.

keyspacingyint

Vertical padding.

labellabelObj immutable

legend label.

mapmapObj immutable

Reference to parent mapObj.

outlinecolorcolorObj

key outline color.

positionint

MS_UL, MS_UC, MS_UR, MS_LL, MS_LC, or MS_LR.

postlabelcacheint

MS_TRUE or MS_FALSE.

statusint

MS_ON, MS_OFF, or MS_EMBED.

templatestring

Path to template file.

widthint

Label width.

legendObj Methods

convertToString()string

Добавлено в версии 6.4.

Saves the object to a string. Provides the inverse option for updateFromString.

lineObj

A lineObj is composed of one or more pointObj instances:

+------+ 0..1  1..* +-------+
| Line | ---------> | Point |
+------+            +-------+

lineObj Attributes

numpointsint immutable

Number of points in the line.

lineObj Methods

new lineObj( )lineObj

Create a new instance.

add(pointObj point)int

Add point to the line. Returns MS_SUCCESS or MS_FAILURE.

get(int index)pointObj

Return reference to point at index.

project(projectionObj proj_in, projectionObj proj_out)int

Transform line in place from proj_in to proj_out. Returns MS_SUCCESS or MS_FAILURE.

set(int index, pointObj point)int

Set the point at index to point. Returns MS_SUCCESS or MS_FAILURE.

mapObj

A mapObj is primarily associated with instances of layerObj:

+-----+ 0..1  0..* +-------+
| Map | <--------> | Layer |
+-----+            +-------+

Secondary associations are with legendObj, scalebarObj, referenceMapObj:

+-----+ 1     0..1 +--------------+
| Map | ---------> | Legend       |
+-----+            | ------------ |
                   | Scalebar     |
                   | ------------ |
                   | ReferenceMap |
                   +--------------+

outputFormatObj:

+-----+ 1     1..* +--------------+
| Map | ---------> | OutputFormat |
+-----+            +------------- +

mapObj Attributes

cellsizefloat

Pixel size in map units.

configoptionshashObj immutable

A hash table of configuration options from CONFIG keywords in the .map. Direct access to config options is discouraged. Use the setConfigOption() and getConfigOption() methods instead.

datapatternstring

TODO not sure this is meaningful for mapscript.

debugint

MS_TRUE or MS_FALSE.

См.также

Debugging MapServer

extentrectObj

Map’s spatial extent.

fontsetfontSetObj immutable

The map’s defined fonts.

heightint

Map’s output image height in pixels.

Примечание

direct setting of height is deprecated in MapServer version 4.4. Users should set width and height simultaneously using setSize().

imagecolorcolorObj

Initial map background color.

imagequalityint

JPEG image quality.

Примечание

map imagequality is deprecated in MapServer 4.4 and should instead be managed through map outputformats.

imagetypestring immutable

Name of the current output format.

interlaceint

Output image interlacing.

Примечание

map interlace is deprecated in MapServer 4.4 and should instead be managed through map outputformats.

lablecachelabelCacheObj immutable

Map’s labelcache.

legendlegendObj immutable

Reference to map’s legend.

mappathstring

Filesystem path of the map’s mapfile.

maxsizeint

TODO ?

namestring

Unique identifier.

numlayersint immutable

Number of map layers.

numoutputformatsint

The number of output formats currently configured on the map object. Can be used to iterate over the list of output formats with the getOutputFormat(idx) method (see below).

outputformatoutputFormatObj

The currently selected output format.

Примечание

Map outputformat should not be modified directly. Use the selectOutputFormat() method to select named formats.

outputformatlistoutputFormatObj[]

Array of the available output formats.

Примечание

Currently only available for C#. A proper typemaps should be implemented for the other languages.

Примечание

As of 6.2 other languages can use the getoutputFormat(idx) and getNumoutputformats() functions to iterate over the format array.

querymapqueryMapObj immutable

TODO should this be exposed to mapscript?

referencereferenceMapObj immutable

Reference to reference map.

resolutionfloat

Nominal DPI resolution. Default is 72.

scalebarscalebarObj immutable

Reference to the scale bar.

scaledenomfloat

The nominal map scale. A value of 25000 means 1:25000 scale.

shapepathstring

Base filesystem path to layer data.

statusint

MS_OFF, MS_ON, or MS_DEFAULT.

symbolsetsymbolSetObj immutable

The map’s set of symbols.

templatepatternstring

TODO not sure this is meaningful for mapscript.

transparentint

MS_TRUE or MS_FALSE.

Примечание

map transparent is deprecated in MapServer 4.4 and should instead be managed through map outputformats.

unitsint

MS_DD, MS_METERS, etc.

webwebObj immutable

Reference to map’s web definitions.

widthint

Map’s output image width in pixels.

Примечание

direct setting of width is deprecated in MapServer version 4.4. Users should set width and height simultaneously using setSize().

mapObj Methods

new mapObj( [ string filename=““ ] )mapObj

Create a new instance of mapObj. Note that the filename is now optional.

appendOutputFormat( outputFormatObj format )int

Attach format to the map’s output format list. Returns the updated number of output formats.

applyConfigOptions( )void

Apply the defined configuration options set by setConfigOption().

applySLD( string sldxml )int

Parse the SLD XML string sldxml and apply to map layers. Returns MS_SUCCESS or MS_FAILURE.

applySLDURL( string sldurl )int

Fetch SLD XML from the URL sldurl and apply to map layers. Returns MS_SUCCESS or MS_FAILURE.

clone( )mapObj

Returns a independent copy of the map, less any caches.

Примечание

In the Java module this method is named „cloneMap“.

convertToString()string

Добавлено в версии 6.4.

Saves the object to a string.

Примечание

The inverse method updateFromString does not exist for the mapObj

draw( )imageObj

Draw the map, processing layers according to their defined order and status. Return an imageObj.

drawLabelCache( imageObj image )int

Draw map’s label cache on image. Returns MS_SUCCESS or MS_FAILURE.

drawLegend( )imageObj

Draw map legend, returning an imageObj.

drawQuery( )imageObj

Draw query map, returning an imageObj.

drawReferenceMap( )imageObj

Draw reference map, returning an imageObj.

drawScalebar( )imageObj

Draw scale bar, returning an imageObj.

embedLegend( imageObj image )int

Embed map’s legend in image. Returns MS_SUCCESS or MS_FAILURE.

embedScalebar( imageObj image )int

Embed map’s scalebar in image. Returns MS_SUCCESS or MS_FAILURE.

freeQuery( [ int qlayer=-1 ] )void

Clear layer query result caches. Default is -1, or all layers.

generateSLD( )string

Return SLD XML as a string for map layers that have STATUS on.

getConfigOption( string key )string

Fetches the value of the requested configuration key if set. Returns NULL if the key is not set.

getFirstMetaDataKey( )string

Returns the first key in the web.metadata hash table. With getNextMetaDataKey( ), provides an opaque iterator over keys.

getLabel( int labelindex )labelCacheMemberObj

Return label at specified index from the map’s labelcache.

getLayer( int index )layerObj

Returns a reference to the layer at index.

getLayerByName( string name )layerObj

Returns a reference to the named layer.

getLayersDrawingOrder( )int*

Returns an array of layer indexes in drawing order.

Примечание

Unless the proper typemap is implemented for the module’s language a user is more likely to get back an unusable SWIG pointer to the integer array.

getMetaData( string key )string

Return the value at key from the web.metadata hash table.

getNextMetaDataKey( string lastkey )string

Returns the next key in the web.metadata hash table or NULL if lastkey is the last valid key. If lastkey is NULL, returns the first key of the metadata hash table.

getNumSymbols( )int

Return the number of symbols in map.

getOutputFormat(int i): outputFormatObj

Returns the output format at the specified i index from the output formats array or null if i is beyond the array bounds. The number of outpuFormats can be retrieved by calling getNumoutputformats.

getOutputFormatByName( string imagetype )outputFormatObj

Return the output format corresponding to driver name imagetype or to format name imagetype. This works exactly the same as the IMAGETYPE directive in a mapfile, is case insensitive and allows an output format to be found either by driver (like „GD/PNG“) or name (like „PNG24“).

getProjection( )string

Returns the PROJ definition of the map’s projection.

getRotation( )double

Добавлено в версии 7.6.0.

Returns the map rotation angle.

getSymbolByName( string name )int

Return the index of the named symbol in the map’s symbolset.

Примечание

This method is poorly named and too indirect. It is preferable to use the getSymbolByName method of symbolSetObj, which really does return a symbolObj reference, or use the index method of symbolSetObj to get a symbol’s index number.

insertLayer( layerObj layer [, int nIndex=-1 ] )int

Insert a copy of layer into the Map at index nIndex. The default value of nIndex is -1, which means the last possible index. Returns the index of the new Layer, or -1 in the case of a failure.

loadMapContext( string filename [, int useUniqueNames=MS_FALSE ] )int

Load an OGC map context file to define extents and layers of a map.

loadOWSParameters( OWSRequest request [, string version=“1.1.1“ ] )int

Load OWS request parameters (BBOX, LAYERS, &c.) into map. Returns MS_SUCCESS or MS_FAILURE.

loadQuery( string filename )int

Load a saved query. Returns MS_SUCCESS or MS_FAILURE.

moveLayerDown( int layerindex )int

Move the layer at layerindex down in the drawing order array, meaning that it is drawn later. Returns MS_SUCCESS or MS_FAILURE.

moveLayerUp( int layerindex )int

Move the layer at layerindex up in the drawing order array, meaning that it is drawn earlier. Returns MS_SUCCESS or MS_FAILURE.

nextLabel( )labelCacheMemberObj

Return the next label from the map’s labelcache, allowing iteration over labels.

Примечание

nextLabel() is deprecated and will be removed in a future version. Replaced by getLabel().

OWSDispatch( OWSRequest req )int

Processes and executes the passed OpenGIS Web Services request on the map. Returns MS_DONE (2) if there is no valid OWS request in the req object, MS_SUCCESS (0) if an OWS request was successfully processed and MS_FAILURE (1) if an OWS request was not successfully processed. OWS requests include WMS, WFS, WCS and SOS requests supported by MapServer. Results of a dispatched request are written to stdout and can be captured using the msIO services (ie. msIO_installStdoutToBuffer() and msIO_getStdoutBufferString())

prepareImage( )imageObj

Returns an imageObj initialized to map extents and outputformat.

prepareQuery( )void

TODO this function only calculates the scale or am I missing something?

processLegendTemplate( string names[], string values[], int numitems )string

Process MapServer legend template and return HTML.

Примечание

None of the three template processing methods will be usable unless the proper typemaps are implemented in the module for the target language. Currently the typemaps are not implemented.

processQueryTemplate( string names[], string values[], int numitems )string

Process MapServer query template and return HTML.

Примечание

None of the three template processing methods will be usable unless the proper typemaps are implemented in the module for the target language. Currently the typemaps are not implemented.

processTemplate( int generateimages, string names[], string values[], int numitems )string

Process MapServer template and return HTML.

Примечание

None of the three template processing methods will be usable unless the proper typemaps are implemented in the module for the target language. Currently the typemaps are not implemented.

queryByFeatures( int layerindex )int

Query map layers, result sets contain features that intersect or are contained within the features in the result set of the MS_LAYER_POLYGON type layer at layerindex. Returns MS_SUCCESS or MS_FAILURE.

queryByPoint( pointObj point, int mode, float buffer )int

Query map layers, result sets contain one or more features, depending on mode, that intersect point within a tolerance buffer. Returns MS_SUCCESS or MS_FAILURE.

queryByRect( rectObj rect )int

Query map layers, result sets contain features that intersect or are contained within rect. Returns MS_SUCCESS or MS_FAILURE.

queryByShape( shapeObj shape )int

Query map layers, result sets contain features that intersect or are contained within shape. Returns MS_SUCCESS or MS_FAILURE.

removeLayer( int index )int

Remove the layer at index.

removeMetaData( string key )int

Delete the web.metadata hash at key. Returns MS_SUCCESS or MS_FAILURE.

removeOutputFormat( string name )int

Removes the format named name from the map’s output format list. Returns MS_SUCCESS or MS_FAILURE.

save( string filename )int

Save map to disk as a new map file. Returns MS_SUCCESS or MS_FAILURE.

saveMapContext( string filename )int

Save map definition to disk as OGC-compliant XML. Returns MS_SUCCESS or MS_FAILURE.

saveQuery( string filename )int

Save query to disk. Returns MS_SUCCESS or MS_FAILURE.

saveQueryAsGML( string filename )int

Save query to disk. Returns MS_SUCCESS or MS_FAILURE.

selectOutputFormat( string imagetype )void

Set the map’s active output format to the internal format named imagetype. Built-in formats are «PNG», «PNG24», «JPEG», «GIF», «GTIFF».

setConfigOption( string key, string value )void

Set the indicated key configuration option to the indicated value. Equivalent to including a CONFIG keyword in a map file.

setExtent( float minx, float miny, float maxx, float maxy )int

Set the map extent, returns MS_SUCCESS or MS_FAILURE. This method will correct the extents (width/height ratio) before setting the minx,miny,maxx,maxy values. See extent properties to set up a custom extent from rectObj.

offsetExtent( float x, float y)int

Offset the map extent based on the given distances in map coordinates, returns MS_SUCCESS or MS_FAILURE.

scaleExtent( float zoomfactor, float minscaledenom, float maxscaledenom)int

Scale the map extent using the zoomfactor and ensure the extent within the minscaledenom and maxscaledenom domain. If minscaledenom and/or maxscaledenom is 0 then the parameter is not taken into account. returns MS_SUCCESS or MS_FAILURE.

setCenter( pointObj center )int

Set the map center to the given map point, returns MS_SUCCESS or MS_FAILURE.

setFontSet( string filename )int

Load fonts defined in filename into map fontset. The existing fontset is cleared. Returns MS_SUCCESS or MS_FAILURE.

setImageType( string name )void

Sets map outputformat to the named format.

Примечание

setImageType() remains in the module but it’s use is deprecated in favor of selectOutputFormat().

setLayersDrawingOrder( int layerindexes[])int

Set map layer drawing order.

Примечание

Unless the proper typemap is implemented for the module’s language users will not be able to pass arrays or lists to this method and it will be unusable.

setMetaData( string key, string value )int

Assign value to the web.metadata hash at key. Return MS_SUCCESS or MS_FAILURE.

setOutputFormat( outputFormatObj format )void

Sets map outputformat.

setProjection( string proj4 )int

Set map projection from PROJ definition string proj4.

setRotation( float rotation_angle )int

Set map rotation angle. The map view rectangle (specified in EXTENTS) will be rotated by the indicated angle in the counter- clockwise direction. Note that this implies the rendered map will be rotated by the angle in the clockwise direction. Returns MS_SUCCESS or MS_FAILURE.

setSize( int width, int height )int

Set map’s image width and height together and carry out the necessary subsequent geotransform computation. Returns MS_SUCCESS or MS_FAILURE.

setSymbolSet( string filename )int

Load symbols defined in filename into map symbolset. The existing symbolset is cleared. Returns MS_SUCCESS or MS_FAILURE.

setWKTProjection( string wkt )int

Sets map projection from OGC definition wkt.

zoomPoint( int zoomfactor, pointObj imgpoint, int width, int height, rectObj extent, rectObj maxextent )int

Zoom by zoomfactor to imgpoint in pixel units within the image of height and width dimensions and georeferenced extent. Zooming can be constrained to a maximum maxextent. Returns MS_SUCCESS or MS_FAILURE.

zoomRectangle( rectObj imgrect, int width, int height, rectObj extent,

rectObj maxextent ) : int Zoom to a pixel coordinate rectangle in the image of width and height dimensions and georeferencing extent. Zooming can be constrained to a maximum maxextent. The imgrect rectangle contains the coordinates of the LL and UR coordinates in pixel: the maxy in the rect object should be < miny value. Returns MS_SUCCESS or MS_FAILURE:

------- UR (values in the rect object : maxx, maxy)
|     |
|     |
|     |
------
LL (values in the rectobject minx, miny)

zoomScale( float scale, pointObj imgpoint, int width, int height, rectObj extent, rectObj maxextent)int

Like the previous methods, but zooms to the point at a specified scale.

markerCacheMemberObj

An individual marker. The markerCacheMemberObj class is associated with labelCacheObj:

+------------------+ 0..*     1 +------------+
| MarkerCacheMember | <--------- | LabelCache |
+------------------+            +------------+

markerCacheMemberObj Attributes

idint immutable

Id of the marker.

polyshapeObj immutable

Marker bounding box.

markerCacheMemberObj Methods

None.

outputFormatObj

An outputFormatObj is associated with a mapObj:

+--------------+ 1..*     1 +-----+
| OutputFormat | <--------- | Map |
+--------------+            +-----+

and can also be an attribute of an imageObj.

outputFormatObj Attributes

bandsint

The number of bands in the raster. Only used for the «raw» modes, MS_IMAGEMODE_BYTE, MS_IMAGEMODE_INT16, and MS_IMAGEMODE_FLOAT32. Normally set via the BAND_COUNT formatoption … this field should be considered read-only.

driverstring

A string such as „GD/PNG“ or „GDAL/GTiff“.

extensionstring

Format file extension such as „png“.

imagemodeint

MS_IMAGEMODE_PC256, MS_IMAGEMODE_RGB, MS_IMAGEMODE_RGBA, MS_IMAGEMODE_INT16, MS_IMAGEMODE_FLOAT32, MS_IMAGEMODE_BYTE, or MS_IMAGEMODE_NULL.

mimetypestring

Format mimetype such as „image/png“.

namestring

A unique identifier.

numformatoptions: int

The number of option values set on this format. Can be used to iterate over the options array in conjunction with getOptionAt

rendererint

MS_RENDER_WITH_GD, MS_RENDER_WITH_SWF, MS_RENDER_WITH_RAWDATA, MS_RENDER_WITH_PDF, or MS_RENDER_WITH_IMAGEMAP. Normally set internally based on the driver and some other setting in the constructor.

transparentint

MS_ON or MS_OFF.

outputFormatObj Methods

new outputFormatObj( string driver [, string name=driver ] )outputFormatObj

Create new instance. If name is not provided, the value of driver is used as a name.

getOption( string key [, string defaultvalue=»» ] )string

Return the format option at key or defaultvalue if key is not a valid hash index.

getOptionAt(int idx): string

Returns the option at idx or null if the index is beyond the array bounds. The option is returned as the original KEY=VALUE string. The number of available options can be obtained by calling getNumformatoptions.

setExtension( string extension )void

Set file extension for output format such as „png“ or „jpg“. Method could probably be deprecated since the extension attribute is mutable.

setMimetype( string mimetype )void

Set mimetype for output format such as „image/png“ or „image/jpeg“. Method could probably be deprecated since the mimetype attribute is mutable.

setOption( string key, string value )void

Set the format option at key to value. Format options are mostly driver specific.

validate()int

Checks some internal consistency issues, and returns MS_TRUE if things are OK and MS_FALSE if there are problems. Some problems are fixed up internally. May produce debug output if issues encountered.

OWSRequest

Not associated with other mapscript classes. Serves as a message intermediary between an application and MapServer’s OWS capabilities. Using it permits creation of lightweight WMS services:

wms_map = mapscript.mapObj('wms.map')
wms_request = mapscript.OWSRequest()

# Convert application request parameters (req.args)
for param, value in req.args.items():
    wms_request.setParam(param, value)

# Map loads parameters from OWSRequest, adjusting its SRS, extents,
# active layers accordingly
wms_map.loadWMSRequest('1.1.0', wms_request)

# Render the Map
img = wms_map.draw()

OWSRequest Attributes

NumParamsint immutable

Number of request parameters. Eventually should be changed to numparams lowercase like other attributes.

postrequeststring

TODO

typeint

MS_GET_REQUEST or MS_POST_REQUEST.

OWSRequest Methods

new OWSRequest( )OWSRequest

Create a new instance.

Примечание

MapServer’s OWSRequest supports only single valued parameters.

addParameter( string name, string value )void

Add a request parameter, even if the parameter key was previousely set. This is useful when multiple parameters with the same key are required. For example:

request.addParameter('SIZE', 'x(100)')
request.addParameter('SIZE', 'y(100)')

getName( int index )string

Return the name of the parameter at index in the request’s array of parameter names.

getValue( int index )string

Return the value of the parameter at index in the request’s array of parameter values.

getValueByName( string name)string

Return the value associated with the parameter name.

loadParams()int

Initializes the OWSRequest object from the cgi environment variables REQUEST_METHOD, QUERY_STRING and HTTP_COOKIE. Returns the number of name/value pairs collected. Warning: most errors will result in a process exit!

loadParamsFromURL( string url )int

Initializes the OWSRequest object from the provided URL which is treated like a QUERY_STRING. Note that REQUEST_METHOD=GET and no post data is assumed in this case. This method was added in MapServer 6.0.

setParameter( string name, string value )void

Set a request parameter. For example:

request.setParameter('REQUEST', 'GetMap')
request.setParameter('BBOX', '-107.0,40.0,-106.0,41.0')

pointObj

A pointObj instance may be associated with a lineObj:

+-------+ 1..*  0..1 +------+
| Point | <--------- | Line |
+-------+            +------+

pointObj Attributes

mfloat

Measure. Meaningful only for measured shapefiles. Given value -2e38 if not otherwise assigned to indicate «nodata».

xfloat

Easting

yfloat

Northing

zfloat

Elevation

pointObj Methods

new pointObj( [ float x=0.0, float y=0.0, float z=0.0, float m=-2e38 ] )pointObj

Create new instance. Easting, northing, and measure arguments are optional.

distanceToPoint( pointObj point )float

Returns the distance to point.

distanceToSegment( pointObj point1, pointObj point2 )float

Returns the minimum distance to a hypothetical line segment connecting point1 and point2.

distanceToShape( shapeObj shape )float

Returns the minimum distance to shape.

draw( mapObj map, layerObj layer, imageObj image, int classindex, string text )int

Draw the point using the styles defined by the classindex class of layer and labeled with string text. Returns MS_SUCCESS or MS_FAILURE.

project( projectionObj proj_in, projectionObj proj_out )int

Reproject point from proj_in to proj_out. Transformation is done in place. Returns MS_SUCCESS or MS_FAILURE.

setXY( float x, float y [, float m=2e-38 ] )int

Set spatial coordinate and, optionally, measure values simultaneously. The measure will be set only if the value of m is greater than the ESRI measure no-data value of 1e-38. Returns MS_SUCCESS or MS_FAILURE.

setXYZ( float x, float y, float z [, float m=-2e38 ] )int

Set spatial coordinate and, optionally, measure values simultaneously. The measure will be set only if the value of m is greater than the ESRI measure no-data value of -1e38. Returns MS_SUCCESS or MS_FAILURE.

setXYZM( float x, float y, float z, float m )int

Set spatial coordinate and, optionally, measure values simultaneously. The measure will be set only if the value of m is greater than the ESRI measure no-data value of -1e38. Returns MS_SUCCESS or MS_FAILURE.

toShape()shapeObj

Convience method to quickly turn a point into a shapeObj.

toString()string

Return a string formatted like:

{ 'x': %f , 'y': %f, 'z': %f }

with the coordinate values substituted appropriately. Python users can get the same effect via the pointObj __str__ method:

>>> p = mapscript.pointObj(1, 1)
>>> str(p)
{ 'x': 1.000000 , 'y': 1.000000, 'z': 1.000000 }

projectionObj

This class is not really fully implemented yet. MapServer’s Maps and Layers have Projection attributes, and these are C projectionObj structures, but are not directly exposed by the mapscript module. Currently we have to do some round-a-bout logic like this:

point.project(projectionObj(mapobj.getProjection(),
              projectionObj(layer.getProjection())

to project a point from map to layer reference system.

projectionObj Attributes

numargsint immutable

Number of PROJ arguments.

projectionObj Methods

new projectionObj( string proj4 )projectionObj

Create new instance of projectionObj. Input parameter proj4 is a PROJ definition string such as «init=EPSG:4269».

getUnits()int

Returns the units of a projection object. Returns -1 on error.

rectObj

A rectObj may be a lone object or an attribute of another object and has no other associations.

rectObj Attributes

maxxfloat

Maximum easting

maxyfloat

Maximum northing

minxfloat

Minimum easting

minyfloat

Minimum northing

rectObj Methods

new rectObj( [ float minx=-1.0, float miny=-1.0, float maxx=-1.0, float maxy=-1.0, int imageunits=MS_FALSE ] )rectObj

Create new instance. The four easting and northing arguments are optional and default to -1.0. Note the new optional fifth argument which allows creation of rectangles in image (pixel/line) units which are also tested for validity.

draw( mapObj map, layerObj layer, imageObj img, int classindex, string text )int

Draw rectangle into img using style defined by the classindex class of layer. The rectangle is labeled with the string text. Returns MS_SUCCESS or MS_FAILURE.

getCenter()pointObj

Return the center point of the rectagle.

project( projectionObj proj_in, projectionObj proj_out )int

Reproject rectangle from proj_in to proj_out. Transformation is done in place. Returns MS_SUCCESS or MS_FAILURE.

toPolygon()shapeObj

Convert to a polygon of five vertices.

toString()string

Return a string formatted like:

{ 'minx': %f , 'miny': %f , 'maxx': %f , 'maxy': %f }

with the bounding values substituted appropriately. Python users can get the same effect via the rectObj __str__ method:

>>> r = mapscript.rectObj(0, 0, 1, 1)
>>> str(r)
{ 'minx': 0 , 'miny': 0 , 'maxx': 1 , 'maxy': 1 }

referenceMapObj

A referenceMapObj is associated with mapObj:

+--------------+ 0..1     1 +-----+
| ReferenceMap | <--------> | Map |
+--------------+            +-----+

referenceMapObj Attributes

colorcolorObj

Color of reference box.

extentrectObj

Spatial extent of reference in units of parent map.

heightint

Height of reference map in pixels.

imagestring

Filename of reference map image.

mapmapObj immutable

Reference to parent mapObj.

markerint

Index of a symbol in the map symbol set to use for marker.

markernamestring

Name of a symbol.

markersizeint

Size of marker.

maxboxsizeint

Pixels.

minboxsizeint

Pixels.

outlinecolorcolorObj

Outline color of reference box.

statusint

MS_ON or MS_OFF.

widthint

In pixels.

referenceMapObj Methods

convertToString()string

Добавлено в версии 6.4.

Saves the object to a string. Provides the inverse option for updateFromString.

resultCacheMemberObj

Has no associations with other MapScript classes and has no methods. By using several indexes, a resultCacheMemberObj refers to a single layer feature.

resultCacheMemberObj Attributes

classindexint immutable

The index of the layer class into which the feature has been classified.

shapeindexint immutable

Index of the feature within the layer.

tileindexint immutable

Meaningful for tiled layers only, index of the shapefile data tile.

resultCacheObj

See querying-HOWTO.txt for extra guidance in using the new 4.4 query API.

resultCacheObj Attributes

boundsrectObj immutable

Bounding box of query results.

numresultsint immutable

Length of result set.

resultCacheObj Methods

getResult( int i )resultCacheMemberObj

Returns the result at index i, like layerObj::getResult, or NULL if index is outside the range of results.

scalebarObj

A scalebarObj is associated with mapObj:

+----------+ 0..1     1 +-----+
| Scalebar | <--------- | Map |
+----------+            +-----+

and also with labelObj:

+----------+ 1        1 +-------+
| Scalebar | ---------> | Label |
+----------+            +-------+

scalebarObj Attributes

backgroundcolorcolorObj

Scalebar background color.

colorcolorObj

Scalebar foreground color.

heightint

Pixels.

imagecolorcolorObj

Background color of scalebar.

intervalsint

Number of intervals.

labellabelObj

Scalebar label.

outlinecolorcolorObj

Foreground outline color.

positionint

MS_UL, MS_UC, MS_UR, MS_LL, MS_LC, or MS_LR.

postlabelcacheint

MS_TRUE or MS_FALSE.

statusint

MS_ON, MS_OFF, or MS_EMBED.

styleint

0 or 1.

unitsint

See MS_UNITS in mapserver.h.

widthint

Pixels.

scalebarObj Methods

convertToString()string

Добавлено в версии 6.4.

Saves the object to a string. Provides the inverse option for updateFromString.

shapefileObj

shapefileObj Attributes

boundsrectObj

Extent of shapes.

numshapesint

Number of shapes.

typeint

See mapshape.h for values of type.

shapefileObj Methods

new shapefileObj( string filename [, int type=-1 ] )shapefileObj

Create a new instance. Omit the type argument or use a value of -1 to open an existing shapefile.

add( shapeObj shape )int

Add shape to the shapefile. Returns MS_SUCCESS or MS_FAILURE.

get( int i, shapeObj shape )int

Get the shapefile feature from index i and store it in shape. Returns MS_SUCCESS or MS_FAILURE.

getShape( int i )shapeObj

Returns the shapefile feature at index i. More efficient than get.

TODO

shapeObj

Each feature of a layer’s data is a shapeObj. Each part of the shape is a closed lineObj:

+-------+ 1    1..* +------+
| Shape | --------> | Line |
+-------+           +------+

shapeObj Attributes

boundsrectObj

Bounding box of shape.

classindexint

The class index for features of a classified layer.

indexint

Feature index within the layer.

numlinesint immutable

Number of parts.

numvaluesint immutable

Number of shape attributes.

textstring

Shape annotation.

tileindexint

Index of tiled file for tileindexed layers.

typeint

MS_SHAPE_POINT, MS_SHAPE_LINE, MS_SHAPE_POLYGON, or MS_SHAPE_NULL.

shapeObj Methods

new shapeObj( int type )shapeObj

Return a new shapeObj of the specified type. See the type attribute above. No attribute values created by default. initValues should be explicitly called to create the required number of values.

add( lineObj line )int

Add line (i.e. a part) to the shape. Returns MS_SUCCESS or MS_FAILURE.

boundary()shapeObj

Returns the boundary of the existing shape. Requires GEOS support. Returns NULL/undef on failure.

buffer( int distance )shapeObj

Returns a new buffered shapeObj based on the supplied distance (given in the coordinates of the existing shapeObj). Requires GEOS support. Returns NULL/undef on failure.

clone()shapeObj

Return an independent copy of the shape.

contains( pointObj point )int

Returns MS_TRUE if the point is inside the shape, MS_FALSE otherwise.

contains( shapeObj shape2 )int

Returns MS_TRUE if shape2 is entirely within the shape. Returns -1 on error and MS_FALSE otherwise. Requires GEOS support.

convexHull()shapeObj

Returns the convex hull of the existing shape. Requires GEOS support. Returns NULL/undef on failure.

copy( shapeObj shape_copy )int

Copy the shape to shape_copy. Returns MS_SUCCESS or MS_FAILURE.

crosses( shapeObj shape2 )int

Returns MS_TRUE if shape2 crosses the shape. Returns -1 on error and MS_FALSE otherwise. Requires GEOS support.

difference( shapeObj shape )shapeObj

Returns the computed difference of the supplied and existing shape. Requires GEOS support. Returns NULL/undef on failure.

disjoint( shapeObj shape2 )int

Returns MS_TRUE if shape2 and the shape are disjoint. Returns -1 on error and MS_FALSE otherwise. Requires GEOS support.

distanceToPoint( pointObj point )float

Return distance to point.

distanceToShape( shapeObj shape )float

Return the minimum distance to shape.

draw( mapObj map, layerObj layer, imageObj img )int

Draws the individual shape using layer. Returns MS_SUCCESS or MS_FAILURE.

equals( shapeObj shape2 )int

Returns MS_TRUE if the shape and shape2 are equal (geometry only). Returns -1 on error and MS_FALSE otherwise. Requires GEOS support.

fromWKT( char *wkt )shapeObj

Returns a new shapeObj based on a well-known text representation of a geometry. Requires GEOS support. Returns NULL/undef on failure.

get( int index )lineObj

Returns a reference to part at index. Reference is valid only during the life of the shapeObj.

getArea()double

Returns the area of the shape (if applicable). Requires GEOS support.

getCentroid()pointObj

Returns the centroid for the existing shape. Requires GEOS support. Returns NULL/undef on failure.

getLength()double

Returns the length (or perimeter) of a shape. Requires GEOS support.

getValue( int i )string

Return the shape attribute at index i.

initValues( int numvalues )void

Allocates memory for the requested number of values.

intersects( shapeObj shape )int

Returns MS_TRUE if the two shapes intersect, MS_FALSE otherwise.

Примечание

Does not require GEOS support but will use GEOS functions if available.

intersection( shapeObj shape )shapeObj

Returns the computed intersection of the supplied and existing shape. Requires GEOS support. Returns NULL/undef on failure.

overlaps( shapeObj shape2 )int

Returns MS_TRUE if shape2 overlaps shape. Returns -1 on error and MS_FALSE otherwise. Requires GEOS support.

project( projectionObj proj_in, projectionObj proj_out )int

Reproject shape from proj_in to proj_out. Transformation is done in place. Returns MS_SUCCESS or MS_FAILURE.

setBoundsvoid

Must be called to calculate new bounding box after new parts have been added.

TODO: should return int and set msSetError.

setValue( int i, string value )int

Set the shape value at index i to value.

simplify( double tolerance ): shapeObj

Given a tolerance, returns a simplified shape object or NULL on error. Requires GEOS support (>=3.0).

symDifference( shapeObj shape )shapeObj

Returns the computed symmetric difference of the supplied and existing shape. Requires GEOS support. Returns NULL/undef on failure.

topologyPreservingSimplify( double tolerance ): shapeObj

Given a tolerance, returns a simplified shape object or NULL on error. Requires GEOS support (>=3.0).

touches( shapeObj shape2 )int

Returns MS_TRUE if the shape and shape2 touch. Returns -1 on error and MS_FALSE otherwise. Requires GEOS support.

toWKT()string

Returns the well-known text representation of a shapeObj. Requires GEOS support. Returns NULL/undef on failure.

Union( shapeObj shape )shapeObj

Returns the union of the existing and supplied shape. Shapes must be of the same type. Requires GEOS support. Returns NULL/undef on failure.

within( shapeObj shape2 )int

Returns MS_TRUE if the shape is entirely within shape2. Returns -1 on error and MS_FALSE otherwise. Requires GEOS support.

styleObj

An instance of styleObj is associated with one instance of classObj:

+-------+ 0..*    1 +-------+
| Style | <-------- | Class |
+-------+           +-------+

An instance of styleObj can exist outside of a classObj container and be explicitly inserted into the classObj for use in mapping:

new_style = new styleObj()
the_class.insertStyle(new_style)

It is important to understand that insertStyle inserts a copy of the styleObj instance, not a reference to the instance itself.

The older use case:

new_style = new styleObj(the_class)

remains supported. These will be the only ways to access the styles of a class. Programmers should no longer directly access the styles attribute.

styleObj Attributes

angledouble

Angle, given in degrees, to draw the line work. Default is 0. For symbols of Type HATCH, this is the angle of the hatched lines.

angleitemstring

Не рекомендуется, начиная с версии 5.0: Use setBinding.

backgroundcolorcolorObj

Background pen color.

colorcolorObj

Foreground or fill pen color.

mincolorcolorObj

Attribute for Color Range Mapping (MS RFC 6: Color Range Mapping of Continuous Feature Values). mincolor, minvalue, maxcolor, maxvalue define the range for mapping a continuous feature value to a continuous range of colors when rendering the feature on the map.

minsizeint

Minimum pen or symbol width for scaling styles.

minvaluedouble

Attribute for Color Range Mapping (MS RFC 6: Color Range Mapping of Continuous Feature Values). mincolor, minvalue, maxcolor, maxvalue define the range for mapping a continuous feature value to a continuous range of colors when rendering the feature on the map.

minwidthint

Minimum width of the symbol.

maxcolorcolorObj

Attribute for Color Range Mapping (MS RFC 6: Color Range Mapping of Continuous Feature Values). mincolor, minvalue, maxcolor, maxvalue define the range for mapping a continuous feature value to a continuous range of colors when rendering the feature on the map.

maxsizeint

Maximum pen or symbol width for scaling.

maxvaluedouble

Attribute for Color Range Mapping (MS RFC 6: Color Range Mapping of Continuous Feature Values). mincolor, minvalue, maxcolor, maxvalue define the range for mapping a continuous feature value to a continuous range of colors when rendering the feature on the map.

maxwidthint

Maximum width of the symbol.

offsetxint

Draw with pen or symbol offset from map data.

offsetyint

Draw with pen or symbol offset from map data.

outlinecolorcolorObj

Outline pen color.

patternarray of double values

List of on, off values to define a dash pattern for line work (lines, polygon outlines, hatch lines, …)

patternlengthint

Number of elements in the pattern attribute.

rangeitemstring

Attribute/field that stores the values for the Color Range Mapping (MS RFC 6: Color Range Mapping of Continuous Feature Values).

sizeint

Pixel width of the style’s pen or symbol.

sizeitemstring

Не рекомендуется, начиная с версии 5.0: Use setBinding.

symbolint

The index within the map symbolset of the style’s symbol.

symbolnamestring immutable

Name of the style’s symbol.

widthint

Width refers to the thickness of line work drawn, in pixels. Default is 1. For symbols of Type HATCH, the with is how thick the hatched lines are.

styleObj Methods

new styleObj( [ classObj parent_class ] )styleObj

Returns new default style Obj instance. The parent_class is optional.

clonestyleObj

Returns an independent copy of the style with no parent class.

convertToString()string

Добавлено в версии 6.4.

Saves the object to a string. Provides the inverse option for updateFromString.

getBinding( int binding )string

Get the attribute binding for a specified style property. Returns NULL if there is no binding for this property.

removeBinding( int binding )int

Remove the attribute binding for a specfiled style property.

setBinding ( int binding, string item )int

Set the attribute binding for a specified style property. Binding constants look like this: MS_STYLE_BINDING_[attribute name]:

setBinding(MS_STYLE_BINDING_SIZE, 'mySizeItem');

setSymbolByName(mapObj map, string symbolname)int

Setting the symbol of the styleObj given the reference of the map object and the symbol name.

updateFromString ( string snippet )int

Update a style from a string snippet. Returns MS_SUCCESS/MS_FAILURE.

symbolObj

A symbolObj is associated with one symbolSetObj:

+--------+ 0..*    1 +-----------+
| Symbol | <-------- | SymbolSet |
+--------+           +-----------+

A styleObj will often refer to a symbolObj by name or index, but this is not really an object association, is it?

symbolObj Attributes

antialiasint

MS_TRUE or MS_FALSE.

characterstring

For TrueType symbols.

filledint

MS_TRUE or MS_FALSE.

fontstring

For TrueType symbols.

gapint

Moved to STYLE

imagepathstring

Path to pixmap file.

inmapfileint

If set to TRUE, the symbol will be saved inside the mapfile. Added in MapServer 5.6.1

linecapint

Moved to STYLE

linejoinint

Moved to STYLE

linejoinmaxsizefloat

Moved to STYLE

namestring

Symbol name

numpointsint immutable

Number of points of a vector symbol.

positionint

No more available?

sizexfloat

TODO what is this?

sizeyfloat

TODO what is this?

stylelengthint

Number of intervals

transparentint

TODO what is this?

transparentcolorint

TODO is this a derelict attribute?

typeint

MS_SYMBOL_SIMPLE, MS_SYMBOL_VECTOR, MS_SYMBOL_ELLIPSE, MS_SYMBOL_PIXMAP, or MS_SYMBOL_TRUETYPE.

symbolObj Methods

new symbolObj( string symbolname [, string imagefile ] )symbolObj

Create new default symbol named name. If imagefile is specified, then the symbol will be of type MS_SYMBOL_PIXMAP.

getImage()imageObj

Returns a pixmap symbol’s imagery as an imageObj.

getPoints()lineObj

Returns the symbol points as a lineObj.

setImage( imageObj image )int

Set a pixmap symbol’s imagery from image.

setPoints( lineObj line )int

Sets the symbol points from the points of line. Returns the updated number of points.

setStyle( int index, int value )int

Set the style at index to value. Returns MS_SUCCESS or MS_FAILURE.

symbolSetObj

A symbolSetObj is an attribute of a mapObj and is associated with instances of symbolObj:

+-----------+ 1    0..* +--------+
| SymbolSet | --------> | Symbol |
+-----------+           +--------+

symbolSetObj Attributes

filenamestring

Symbolset filename

numsymbolsint immutable

Number of symbols in the set.

symbolSetObj Methods

new symbolSetObj( [ string symbolfile ] )symbolSetObj

Create new instance. If symbolfile is specified, symbols will be loaded from the file.

appendSymbol( symbolObj symbol )int

Add a copy of symbol to the symbolset and return its index.

getSymbol( int index )symbolObj

Returns a reference to the symbol at index.

getSymbolByName( string name )symbolObj

Returns a reference to the symbol named name.

index( string name )int

Return the index of the symbol named name or -1 in the case that no such symbol is found.

removeSymbol( int index )symbolObj

Remove the symbol at index and return a copy of the symbol.

save( string filename )int

Save symbol set to a file. Returns MS_SUCCESS or MS_FAILURE.

webObj

Has no other existence than as an attribute of a mapObj. Serves as a container for various run-time web application definitions like temporary file paths, template paths, etc.

webObj Attributes

emptystring

TODO

errorstring

TODO

extentrectObj

Clipping extent.

footerstring

Path to footer document.

headerstring

Path to header document.

imagepathstring

Filesystem path to temporary image location.

imageurlstring

URL to temporary image location.

logstring

TODO

mapmapObj immutable

Reference to parent mapObj.

maxscaledenomfloat

Minimum map scale.

maxtemplatestring

TODO

metadatahashTableObj immutable

metadata hash table.

minscaledenomfloat

Maximum map scale.

mintemplatestring

TODO

queryformatstring

TODO

templatestring

Path to template document.

webObj Methods

convertToString()string

Добавлено в версии 6.4.

Saves the object to a string. Provides the inverse option for updateFromString.