[email protected] wrote:
gdalwarp -srcnodata -3.4028234663852886e+38 \
EstRN.img EstSh.img icu.tif
I thought I must launch gdalwrap once for each file. Didn't know I could
specify several input files
Steve,
This is a relatively new feature - likely new in 1.6.0.
I think I need to specify the extent and the resolution.
- Is the resolution is the pixel size get by gdalinfo?
- The Pixel Size is not the same for all images. Per example I got
(30.000000000000099,-30.000000000000103)
and
this for another image
Pixel Size = (30.000000000000000,-30.000000000000000)
What will append if I specify -tr 30 -30 as resolution in this case
I do not believe you should be using a negative for the y pixel size.
In this regard it is a bit different than the way things appear in the
geotransform.
If you want an output image with 30m pixels, you would indeed specify
"-tr 30 30"
If you don't specify, gdalwarp will pick a resolution - possibly based
on the first file, or perhaps the highest resolution file.
Best regards,
--
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up | Frank Warmerdam, [email protected]
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | Geospatial Programmer for Rent
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