[Gdal-dev] gdalwarp: bad output header?

[Frank Warmerdam]

Michael Tan wrote:
> Hi Frank-
> 
> I got the latest version of Proj and the daily CVS build of gdal, and it
> worked! I did find one glitch that you might want to know about. It turns
> out that if the output file already exists, gdalwarp will sometimes
> produces error messages and fail to do the projection.

Michael,

If the output file already exists gdalwarp attempts to overlay the warp
result into the existing file.  This is intended to allow it to be used
for mosaicing.  But if the existing output file is inappropriate for some
reason results may be peculiar or generate an error.  Could you look into
this a bit more and report any cases that seem like inappropriate errors?

Thanks,

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