You need use the special field OGR_GEOMETRY to filter by geometry type.
With ogrinfo this can be done as follows:
$ ogrinfo -al test.kml -where "OGR_GEOMETRY='LINESTRING'"
$ ogrinfo -al test.kml -where "OGR_GEOMETRY='POINT'"
Not sure how to translate this into mapfile syntax. May be using LAYER.FILTER,
LAYER.DATA or (on MapServer 7.0) PROCESSING_OPTION "NATIVE_FILTER".
Using FILTER might not work due to MapServer blocking the "virtual" attribute...
LAYER
TYPE POINT
...
FILTER "('[OGR_GEOMETRY]' == 'POINT')"
...
END
Or
LAYER
TYPE POINT
...
DATA "SELECT * FROM 'Fibertech solution' WHERE OGR_GEOMETRY='POINT'"
...
END
Or
LAYER
TYPE POINT
...
PROCESSING_OPTION "NATIVE_FILTER=OGR_GEOMETRY='POINT'"
...
END
HTH
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