[GRASS-user] average value of raster map

GRASS GRASS user
1

Hello grass users
I try to compute of average value of raster map (slope map) using grass (im interesting to get only one value not new map)
i know how to do it using R but im wonder if grass can do it.
best regards
mt

Maciej Tomaszczyk
Polish Geological Institute
Geological Mapping Department
http://www.pgi.gov.pl
http://www.opengeology.pl

2

On 20/02/08 11:35, Maciej Tomaszczyk wrote:

Hello grass users
I try to compute of average value of raster map (slope map) using grass (im interesting to get only one value not new map)
i know how to do it using R but im wonder if grass can do it.

r.univar ?

Moritz

3

Maciej Tomaszczyk wrote:

> I try to compute of average value of raster map (slope map) using
> grass (im interesting to get only one value not new map)
> i know how to do it using R but im wonder if grass can do it.

Moritz Lennert answered:

r.univar ?

make sure you run 'g.region rast=yourmap' before r.univar if you want
it to act on the whole map and not just the current region zoom
settings.

Hamish

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4

thanks for help
r.univar is what im looking for
best
mt

Maciej Tomaszczyk
Polish Geological Institute
Geological Mapping Department
http://www.pgi.gov.pl
http://www.opengeology.pl

-----Wiadomość oryginalna-----
Od: Hamish [mailto:hamish_b@yahoo.com]
Wysłano: Śr 2008-02-20 16:46
Do: Maciej Tomaszczyk
DW: grass-user@lists.osgeo.org
Temat: Re: [GRASS-user] average value of raster map

Maciej Tomaszczyk wrote:

I try to compute of average value of raster map (slope map) using
grass (im interesting to get only one value not new map)
i know how to do it using R but im wonder if grass can do it.

Moritz Lennert answered:

r.univar ?

make sure you run ‘g.region rast=yourmap’ before r.univar if you want
it to act on the whole map and not just the current region zoom
settings.

Hamish

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Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping