Ticket #2940 (closed defect: fixed)
NITF projection wrong at high latitudes
|Reported by:||karney||Owned by:||rouault|
The documentation for NITF data says that it typically uses a polar projection north of 80N where
x = (90-lat) * sin(lon); y = (90-lat) * -cos(lon)
(not sure I have the phase of lon right...). I have an ONC image 00028053.on9 where the projection is in this form (lat = 80N is circular).
However GDAL thinks there's merely an affine transformation between image space and geographic coordinates. So when I warp the image to WGS84 geographic coordinates lat = 80N is still curved.
Is this a problem with the meta data in my file? Or is GDAL mishandled these images at high latitudes.