On 05/03/12 15:56, Johannes Radinger wrote:
Hi,
-------- Original-Nachricht --------
Datum: Fri, 02 Mar 2012 20:22:30 +0100
Von: Moritz Lennert<[email protected]>
An: Johannes Radinger<[email protected]>
CC: [email protected]
Betreff: Re: [GRASS-user] Replace 0 by NULL in categorial raster map
On 02/03/12 15:56, Johannes Radinger wrote:
Just for my personal interest two questions: 1) What if I want to
replace the category "0" with NULL (not the values 0)
Category 0 = value 0.
sorry I meant the category named (with label) "0".
In that case you have to first use your label as a new category value.
You can do that in r.mapcalc with the @ operator:
r.mapcalc labelmap = @categorymap
But how can I simply use a rule in when calling r.reclass in a python script???
grass.run_command("r.reclass",
input = "in",
output = "out",
rules = ???)
http://lists.osgeo.org/pipermail/grass-user/2011-November/062803.html
;-)
To make it easier, here's an example with r.colors that you can
transform for r.reclass:
colorrules = '0 255:255:255 \n 1 165:42:42'
grass.write_command('r.colors', map=carte_diff, rules='-',
stdin=colorrules, quiet=True)
Moritz
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