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

Marcello Gorini gorini at gmail.com
Wed Feb 16 11:00:53 EST 2011

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

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.


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