Frank,
The image I've been trying to convert is at this URL. It's about 6MB,
hopefully that's not too big.
ftp://sidads.colorado.edu/pub/incoming/glewis/polar.gtiff.tif
Basically, I'm trying to convert it to a plain-old EPGS:4326 (latlong
projection).
I appreciate you taking a look.
Scott
PS - I'm still new to the GDAL list; when you say file a Trac ticket,
where would I do this?
Scott Lewis wrote:
I've been having problems getting it staged. As soon as I'm able to
I'll send the URL. Maybe the source geotiff file doesn't have the
information necessary to convert correctly, perhaps.
Again, thanks for your help. Hopefully I'll have the URL soon.
Scott
Frank Warmerdam wrote:
Scott Lewis wrote:
Frank,
Thanks for the help. I tried doing this, and ended up with the same
image (even diff found them to be the same). Here are the various
commands I tried. Maybe I'm just using the -wo option wrong.
gdalwarp -t_srs EPSG:4326 -wo SOURCE_EXTRA=1000 input.gtiff.tif
output1.gtiff.tif
gdalwarp -t_srs EPSG:4326 -wo "SOURCE_EXTRA=1000" input.gtiff.tif
output2.gtiff.tif
gdalwarp -t_srs EPSG:4326 -wo "SOURCE_EXTRA=1000 SAMPLE_GRID=YES
SAMPLE_STEP=100" input.gtiff.tif output3.gtiff.tif
I'll continue to play with those options, though. gdalwarp seems to
not act any different (IE, it takes the same amount of time to
process) with or without the -wo option, so I'm thinking I'm just
not using the option correctly somehow.
Again, I appreciate your help!
Scott,
I suspect I've misconstrued what is going wrong. If you can stage
the input file somewhere, and if it isn't too terribly huge, I would
be interested in trying it myself. Ideally this could be filed as a
Trac ticket.
Best regards,
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