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

[Etienne Tourigny]

The error you get can usually be avoided when you set the output
bounds correctly. Are you sure the -te options you use are correct?

ERROR 1: Too many points (441 out of 441) failed to transform, unable
to compute output bounds



On Mon, Apr 9, 2012 at 1:57 PM, Claire Porter <claire.porter at gmail.com> wrote:
> 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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