> You're not very explicit about what you want to do. From the tile, I guess > you want to get rid of the Z coordinate of the geometry to produce 2D only > geometries ?
Okay, sorry, I will describe it with more detail. I have a shape file where ogrinfo reports it is a "Geometry: 3D Line String". Each object is reported as "LINESTRING" with x-, y- and z-value. If I use "-nlt LINESTRING" I get a file where ogrinfo reports that the file is a "Geometry: Line String" and the elements are "LINESTRING" with only a x- and y-value. If I try the "-lco SHPT=ARC" option, it's the same. But, if I iterate over those files in my application and query the geometry to get the geometry-type via "getGeometryType()" it reports a "wkbGeometryCollection". Any hints? Christoph
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