Gets the extents of a Blob string, within a Coordinate Reference System.
Visual Basic |
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Public Function GetBlobExtent( _ ByVal blob As String, _ ByVal prj As String, _ ByVal fmt As Integer _ ) As String |
SIS_BLOB_SIS_V6_ASCII
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0 = Cadcorp SIS format. |
SIS_BLOB_OGIS_WKT
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2 = OGC Well-Known-Text format |
SIS_BLOB_OGIS_GML | 3 = OGC Geographic Markup Language |
SIS_BLOB_GEOJSON | 6 = Geographic Objects for JSON format |
A comma-delimited string containing a pair of x, y and z co-ordinates describing the extents. Use SplitExtent to get the pair of x, y and z values themselves.
Available: GEO MM ME MD OD OM SISpy
Group:
sis.GetBlobExtent ( blob, "*APrjNatGrid", 0 )
Returns the extent of the value of blob within the National Grid coordinate reference system
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