[GRASS-user] r.mapcalc and producing a max value map

[G. Allegri]

Take a loot to r.statistics:
http://grass.osgeo.org/grass64/manuals/html64_user/r.statistics.html

2008/7/14 Christian Schwartze <Christian.Schwartze at uni-jena.de>:
> Dear GRASS users,
>
> could somebody help me to find some solution for the following task?
> I have a raster map representing many distinct areas (MAP_1) and a second int
> raster with specific values (MAP_2). The result map should contain the same
> areas of MAP_1 but with the max MAP_2 value of each area as IDs. I tried some
> approaches with r.mapcalc but I don't know how to code the region aspect of
> MAP_1 into r.mapcalc.
>
>        MAP_1           MAP_2           --->    MAP_MAX
>        -----           -----                   -------
>
>        1111333332      5266723974              7777999995
>        1113333222      1429784155      --->    7779999555
>        1113333322      4152763923              7779999955
>        1111144442      4125718443              7777788885
>
> Thanks a lot for any help!
> Regards,
> Christian.
>
>
>
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