clip & rectify
jdeckmyn at olympus.crs4.it
Thu May 11 08:00:00 EDT 1995
I want to rectify and clip a sattelite raster map to a dem.
The problem is the following :
I have a dem with a certain resolution (let's suppose 30m)
and a certain orientation.
I have an image with another resolution (let's suppose 100m)
and a certain different orientation (f.i. // instead of || )
This image also coverages a bigger surface then the dem.
Now I want to know how to get a new map from that image which the
same resolution and orientation as the dem.
So the problem is the following :
how grass takes care of these differences in resolution and orientation
(which modules should I use and how do they work ---> the use of
r.resample is not really clear to me , it says to use nearest neighbour to
do the resampling but when I look into r.neighbors the algorithm used for
these kind of problems stays a mistery to me ..)
The final raster I want is a raster of the size and resolution of the dem with
the image-"derived" data (so I can export this raster also out of Grass)
Thanks in advance for every help.
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