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Newsgroups: info.grass.user
Path: zorro.cecer.army.mil!shapiro
From: shapiro at zorro.cecer.army.mil (Michael Shapiro)
Subject: Re: m.rot90
Message-ID: <C2M0pK.2y8 at news.cecer.army.mil>
Sender: news at news.cecer.army.mil (Net.Noise owner)
Organization: US Army Corps of Engineers Construction Engineering Research Labs
References: <9302171024.AA18394 at terra.fct.unl.pt>
Date: Wed, 17 Feb 1993 20:24:56 GMT
Lines: 23

In <9302171024.AA18394 at terra.fct.unl.pt> cis at terra.fct.unl.pt (Cristina Isabel Seabra [Ambiente]) writes:


>Good morning GRASSusers,

>I want to rotate a raster map in GRASS. I tried to use the m.rot90, but it
>isn't working. It gives an error message.
>Is there some other way to rotate raster files?

>Cristina Seabra
>cis at fct.unl.pt

m.rot90 doesn't know about GRASS compressed format. First 
"uncompress" (using r.compress) the raster file, then m.rot90
will work. Be sure to specify the number of bytes per cell to m.rot90
You can get this from the format: filed in the header. If the format
is 0, this is 1 byte per cell, if the format is 1, then it is 2 bytes
(nbytes = format+1).
-- 


Michael Shapiro U.S. Army CERL
Environmental Division