Hi devs,
What is the correct way to extract the EPSG code from an OGRSpatialReferenceH ?
Currently I'm finding that the following works only for SRS of some images and
not others:
const char *charAuthType = OSRGetAttrValue(gdal.srcSRS, "AUTHORITY", 0);
const char *charSrsCode = OSRGetAttrValue(gdal.srcSRS, "AUTHORITY", 1);
However, there is no "AUTHORITY" node in some SRSs so it doesn't work for those
images. To cater for this, I'm trying to explicitly set the authority node
using:
OSRAutoIdentifyEPSG(gdal.srcSRS);
But this fails with OGRERR_UNSUPPORTED_SRS (even when it is an SRS that GDAL
recognises and uses well).
So I'm stumped... how do I reliably determine the EPSG for an
OGRSpatialReferenceH?
Cheers,
Nik.
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