On 06/14/2010 02:42 PM, Kyaw Moe Aung wrote:
Dear Micha and Hamish
Thanks for your solution and explanation regarding to raster import.
Still i am confusing with rgb file. There are three rgb files that
created first then when using i.rectify, another three rgb come with
given extension. That make in total 6 files. Then r.composite as
another colored image. I wish to use this color contour map just for
digitizing. So can i delete all 6 rgb files. I tried to delete three
rgb files after compositing. but there is a problem for rectifying. So
i had to import again those deleted rgb files. And for rectifying it
took half an hour for completion. That's why i asked this question.
Thanks very much.
I think your workflow should be:
1) import the tiff (r.in.gdal) creating the three *.red, *.green *.blue
files
2) Add all three bands to an imagery group (i.group)
3) Set up points for the rectification (i.points)
4) Run i.rectify
5) Now you can do r.composite with the new, rectified triple of *.red,
*.green, *.blue. (Review Hamish's comments about loss of information
when using r.composite)
6) If you're satisfied with the result, remove all 6 separate band rasters.
--
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
U Kyaw Moe Aung, Staff Officer
Planning & Statistics Division, Forest Department, Director General's
Office
Nay Pyi Taw, Ph:095-67-405016, Fax: 095-67-405016
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Micha Silver
Arava Development Co. +972-52-3665918
http://surfaces.co.il
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