Can anyone throw some lights on the question? Thanks, Cheney
On Wed, May 19, 2010 at 6:27 PM, 孙琦 <[email protected]> wrote: > Hi experts, > > Do we have a way to resolve the third dimensionality of GEOMETRY data? As > known, those single types(POINT, LINESTRING, POLYGON....) all have the > corresponding XYM versions with suffix M. Thus, if we have > three-dimensionality feature, we can discriminate its third dimensionality > as Z or M by the returned geometry type. However, if the mixed-typed > (GEOMETRY) is used, it seems that it's hard to resolve the 3rd > dimensionality. By the Postgis 1.5.1 manual, no GEOMETRYM type is provided > to fix the issue. So can someone tell me if there is another way to do the > work? > > Thanks, > Cheney >
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