I have a NITF file which I can read fine with GDAL. The issue that it is a chip and using the transformation to determine geolocations fails (for example finding the chip's four corners). Instead of placing a point based on the chip, it places it based on the whole image. I can read the metadata and see that the RPC metadata contains the chip offset: RPC Metadata: LINE_OFF=3276 LINE_SCALE=3276 SAMP_OFF=2538 SAMP_SCALE=2538 LONG_OFF=-106.8927 LONG_SCALE=0.0542 LAT_OFF=32.3084 LAT_SCALE=0.0593 HEIGHT_OFF=1229 HEIGHT_SCALE=1214
I am tempted to use the LINE_OFF and SAMP_OFF to make the adjustments to properly get the boundary. I believe this is only a partial solution (not generic enough) and will just give further problems as I get other NITF chips. Would someone help me with the proper way of handling the chip transformation? Thank you, Anthony
_______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
