[GRASS-user] Calculate averagfe of raster maps without mapcalc

GRASS GRASS user
1

Greetings

I need to calculate the average of a set of raster images. How can I calculate it without using mapcalc?
THanks

Kim

2

Hi Kim,

You can use r.univar to compute univariate statistics of
your raster data.

http://grass.fbk.eu/grass65/manuals/html65_user/r.univar.html

Regards,
Daniel.

On Wed, Feb 16, 2011 at 2:31 PM, Kim Besson <kimbesson1981@gmail.com> wrote:

Greetings

I need to calculate the average of a set of raster images. How can I calculate it without using mapcalc?
THanks

Kim

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3

Kim:

I need to calculate the average of a set of raster images. How can I
calculate it without using mapcalc?
THanks

Hello Kim,

You can use the module r.series. Like this, if you have few images:

r.series input=image1,image2,image3... method=average output=averaged_image

Or if you have a bunch of images with similar names, you can do:

r.series input="`g.mlist pattern=the_pattern_within_the_ names sep=,`"
method=average output=averaged_image

Hope this helps.

Marcello.

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