Hi,
I need to find out if two WKTs have the same horizontal coordinate systems. I
found OSRIsSameVertCS() but I need some like it for horizontal CS.
I'm thinking something like this should do the trick:
ref1 = OSRNewSpatialReference(wkt1);
if (OSRIsCompound(ref1))
ref1 = <get horizontal cs>(ref1);
ref2 = OSRNewSpatialReference(wkt2);
if (OSRIsCompound(ref2))
ref2 = <get horizontal cs>(ref2);
hasSameHorizontalCS = OSRIsSame(ref1, ref2);
However, I don’t see a way to extract the horizontal cs out of a compound cs.
Questions:
1) Is there a way to extract the horizontal coordinate system? I’m using GDAL
1.9.
2) Is there a better way to solve my problems?
-john
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