<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
<title></title>
</head>
<body bgcolor="#ffffff" text="#000000">
<br>
Michael,<br>
<br>
thanks, that's really what I've found and thenks for your answer making
it clear that there are no other tools for this.<br>
<br>
My actual problem is to have e.g. 14 bands for a single area. I'm
planning to play with displaying compisosite variations withount
createing r.composite or r.rgb files for all possible combinations BUT
- reading you answer finally I found what I need:<br>
<br>
d.rgb :)<br>
<br>
I could easily drop in rasters (eg. bands) and play with my
combinations.<br>
<br>
<br>
thanks!<br>
<br>
Robert<br>
<br>
<br>
<br>
<blockquote cite="midC0D9D2BE.C5A3%25michael.barton@asu.edu" type="cite">
<pre wrap="">Robert,
It isn't clear what you want to do. If you want to patch together adjacent
images (i.e., rasters covering different geographic areas), use r.patch.
If you want to make a color image out of 3 bands, use d.rgb to just display
a color image, or r.composite to combine 3 bands into a new color image
file.
GRASS stores all individual 'bands' as separate rasters that you can
combine, analyze, and process in multiple ways. It does not combine multiple
bands into a single 'file'.
Some processes can deal with a group of images/bands covering the same
geographic area as a 'group'. A group is created with i.group. But a 'group'
is simply a reference to a set of images; it does not combine them into a
single multi-band file. This is unnecessary with GRASS.
Michael
__________________________________________
Michael Barton, Professor of Anthropology
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University
phone: 480-965-6213
fax: 480-965-7671
www: <a class="moz-txt-link-freetext" href="http://www.public.asu.edu/~cmbarton">http://www.public.asu.edu/~cmbarton</a>
</pre>
<blockquote type="cite">
<pre wrap="">From: Robert Kuszinger <a class="moz-txt-link-rfc2396E" href="mailto:kuszinger@giscom.hu"><kuszinger@giscom.hu></a>
Date: Tue, 11 Jul 2006 06:59:59 +0200
To: <a class="moz-txt-link-rfc2396E" href="mailto:grassuser@grass.itc.it"><grassuser@grass.itc.it></a>
Subject: [GRASS-user] how to create multiband/hyperspectral
Hello!
I give up - cannot find the solution. :)
I've created a python script to automatically process ASTER CD-s and
create all the raster layers in grass from a given CD automatically. Now
I have a LOT of raster layers.
*** I would like to join raster layers covering the same area *** to
make only one file for one area. So, how to make a multispectral file
using several raster layers? I have 3-14 bands I'd like to join per image
How to make it?
I checked grass documentation, commands, but simply cannot figure how to
make it.
I realized that there is an i.group command - that could be fine for
rasters as well...
Maybe the answer is too simmple, that's why I can't find.
Thanks for any help
Robert
</pre>
</blockquote>
<pre wrap=""><!---->
</pre>
</blockquote>
<br>
</body>
</html>