[GRASS-user] usage of r.mapcalc in python script

Hi All, please any python programmer could explain me the correct use of r.mapcalc in this case. In my python script I have a formula like this: n = 0.016 * (resolution ** 0.46) (resolution is the cellsize of the input map). and I have to calculate a map with: grass.mapcalc(mti =

[GRASS-user] Calculating slope for raster maps on pixel-based methodology

Greetings I have a bunch of raster maps (5 as a matter of fact) and need to calculate the slope for each pixel. I mean, I need to pick-up all 5 values for each pixel and calculate Slope for that pixel. Now, What I want is to do this for all pixels and obtain a map that represents the slope for

Re: [GRASS-user] Calculating slope for raster maps on pixel-based methodology

Monica Buescu wrote: Greetings I have a bunch of raster maps (5 as a matter of fact) and need to calculate the slope for each pixel. I mean, I need to pick-up all 5 values for each pixel and calculate Slope for that pixel. Now, What I want is to do this for all pixels and obtain a map that

Re: [GRASS-user] Generalization or interpolation using the majority

5 2 2 2 2 2 3 2 5 5 1 3 4 5 Output must be: 1 1 2 3 2 5 2 2 My question is what method do you advise to be used? Thanks Antonio __ Information from ESET NOD32 Antivirus, version of virus signature database 5720 (20101221) __ The message was checked by ESET NOD32 Antivirus. http

Re: [GRASS-user] Generalization or interpolation using the majority

you advise to be used? Thanks Antonio __ Information from ESET NOD32 Antivirus, version of virus signature database 5720 (20101221) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ___ grass-user

[GRASS-user] Creating patches in a raster file

Greetings (It seems that I'm mail bombing to this list but I have a few questions about GRASS usage). I have a classification map and I want to create segments/patches aggregated by its classigfication and assign an patch ID. Let me demonstrate: INPUT: 1 1 2 2 4 4 5 5 5 1 2 2 2 4 5 5 5 1 3 3 2 2

Re: [GRASS-user] usage of r.mapcalc in python script

It works! Thanks a lot. Margherita Try grass.mapcalc(mti = log((exp($rast1 , $n)) / $rast2), rast1 = 'r_accumulation', rast2 = 'r_slope', n = n) Markus M ___ grass-user mailing list grass-user@lists.osgeo.org

Re: [GRASS-user] Creating patches in a raster file

On 21/12/2010 14:26, Monica Buescu wrote: Greetings (It seems that I'm mail bombing to this list but I have a few questions about GRASS usage). I have a classification map and I want to create segments/patches aggregated by its

[GRASS-user] new earthquakes demo

Hi, I have taken Markus's PHP earthquake demo[1] and set it up as a nightly refresh job on one of the OSGeo servers[2]. A few things still to improve, but a demo of what can be done; most importantly the magnitude is now logarithmic instead of linear as it is usually presented. It's scaled back