[GRASS-user] r.composite changing pixel resolution?
Tim Holland
timothyholland at gmail.com
Fri Feb 13 03:28:51 EST 2009
Dear all,
I am new to both Grass and this forum, so apologies in advance for something
which is likely a simple mistake or oversight on my part (but I have
searched the forum and can't seem to find an answer).
I am trying to create RGB-composite images from various sets of Landsat
bands (3,2,1 or 4,5,3). When I try to do this using r.composite, the
resulting raster file has a far courser pixel resolution than the original
images (it looks like it is scaling up by a factor of 12 - so 30m x 30m
pixels become 360m x 360m). I can't see anything in the r.composite manual
that suggests why this would be happening.
If it is relevant, I am also using i.landsat.rgb to balance the colours
before I am using the r.composite. Also, I am using Grass 6.3, and running
it through the plugin on QGIS 0.11.0.
Thanks in advance for any help.
Tim
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