virtual MgCoordinateSystem* MgCoordinateSystemFactory::Create

(

CREFSTRING

wkt

)

[virtual]

Creates an MgCoordinateSystem instance given a definition of the coordinate system in OpenGIS Well-Known Text (WKT) format. See WKT of Spatial Reference System and Coordinate System Test Values .

.NET Syntax

virtual MgCoordinateSystem Create(string wkt);

Java Syntax

virtual MgCoordinateSystem Create(String wkt);

PHP Syntax

virtual MgCoordinateSystem Create(string wkt);

Parameters:

wkt	(String/string) A string defining the coordinate system in OpenGIS WKT format.

Returns:

Returns an MgCoordinateSystem instance that corresponds to the specified WKT definition.

Example (PHP)

 $wktProj = 'PROJCS["UTM Zone 18 (NAD 83)",
        GEOGCS ["NAD 83 (Continental US)", DATUM ["NAD 83 (Continental US)",
        SPHEROID ["GRS 80", 6378137, 298.257222101]],
        PRIMEM [ "Greenwich", 0.000000 ],
        UNIT ["Decimal Degree", 0.01745329251994330]],
        PROJECTION ["Transverse Mercator"],
        PARAMETER ["Scale_Factor", 0.999600], PARAMETER ["Central_Meridian", -75.000000],
        PARAMETER ["False_Easting", 500000.000000],
        UNIT ["Meter", 1.000000000000]]';

 $wktGeog = 'GEOGCS [ "Longitude / Latitude (NAD 83)",
        DATUM ["NAD 83", SPHEROID ["GRS 80", 6378137, 298.257222101]],
        PRIMEM [ "Greenwich", 0.000000 ],
        UNIT ["Decimal Degree", 0.01745329251994330]]';

 $coordSysFactory = new MgCoordinateSystemFactory();
 $coordSysProj = $coordSysFactory($wktProj);
 $coordSysGeog = $coordSysFactory->Create($wktGeog);

Example (C#)

 using OSGeo.MapGuide;
 private MgCoordinateSystemFactory coordSysFactory;

 private MgCoordinateSystem projCS;
 private String projCSWkt = "PROJCS[\"UTM83-4\",GEOGCS[\"LL83\",
        DATUM[\"NAD83\",SPHEROID[\"GRS1980\",6378137.000,298.25722210]],
        PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.017453292519943295]],
        PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"false_easting\",500000.000],
        PARAMETER[\"false_northing\",0.000],PARAMETER[\"central_meridian\",-159.00000000000000],
        PARAMETER[\"scale_factor\",0.9996],PARAMETER[\"latitude_of_origin\",0.000],
        UNIT[\"Meter\",1.00000000000000]]";

 private MgCoordinateSystem geogCS;
 private String geogCSWkt = "GEOGCS[\"LL83\",DATUM[\"NAD83\",
        SPHEROID[\"GRS1980\",6378137.000,298.25722210]],
        PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.01745329251994]]";

 coordSysFactory = new MgCoordinateSystemFactory();
 geogCS = coordSysFactory.Create(geogCSWkt);
 projCS = coordSysFactory.Create(projCSWkt);