[gdal-dev] RPC Transform Error: ERROR 1: latitude or longitude exceeded limits

[Claire Porter]

Etienne,

When I set the extents using -te, I get an output of size 0.  I think
the problem is not in the warping itself, but in the transformation
using the RPCs.

Thanks,
Claire


On Mon, Apr 9, 2012 at 10:04 AM, Etienne Tourigny
<etourigny.dev at gmail.com> wrote:
> Claire,
>
> You may have to set the output extents manually with the -te option.
>
> This has been the solution to many problems with gdalwarp.
>
> Etienne
>
>
> On Mon, Apr 9, 2012 at 11:12 AM, Claire Porter <claire.porter at gmail.com> wrote:
>> Dmitry (and the list),
>>
>> Using the warp options you suggested does not make a difference.  Even
>> SAMPLE_GRID does not significantly change the output.  I also tried using
>> wgs84 as the output coordinate system in case it was an issue of being
>> projected into Polar Stereographic: no luck.
>>
>> I copied the relevant functions from gdal_rpc.cpp into python order to test
>> the RPC calculations independant of the warping functions and any projection
>> system.  I used a sampling grid over the whole extent of whatever test image
>> and found that the RPCs do not converge for any part of the error-prone
>> images  In fact, with each iteration the offset from the original pixel gets
>> further and further from zero (alternating sign each iteration).
>>
>> From these tests, I am guessing that the issue is not the sampling or the
>> projection system.  Since other software packages can handle these images, I
>> assume then that the issue is in how gdal is managing the RPCs.  Any ideas?
>>
>> Many thanks,
>> Claire
>>
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