On Thu, May 11, 2017 at 10:15 AM, Luís Moreira de Sousa <[email protected]> wrote: > Hi Anna, thanks for the help. I can not post the DEM to the list, here is a > link to Dropbox:
It seems the problem is in the filter specification: TITLE 3x3 High Pass MATRIX 3 -1 -1 -1 -1 8 -1 -1 -1 -1 DIVISOR 9 TYPE S If you change it to TYPE P it will work. S is 'sequential': Sequential filtering happens in place. As the filter is applied to the raster map layer, the category values that were changed in neighboring cells affect the resulting category value of the current cell being filtered. So since you have nulls all around it it probably propagates the nulls. I am not sure if it's a bug. Is the S type required for your analysis? Anna > > -- > Luís Moreira de Sousa > Im Grund 6 > CH-8600 Dübendorf > Switzerland > > Phone: +41 (0)79 812 62 65 > Email: [email protected] > URL: https://sites.google.com/site/luismoreiradesousa > > > -------- Original Message -------- > Subject: Re: [GRASS-user] r.mfilter produces empty result > Local Time: 11 May 2017 3:56 PM > UTC Time: 11 May 2017 13:56 > From: [email protected] > To: Martin Landa <[email protected]> > Luís Moreira de Sousa <[email protected]>, > [email protected] <[email protected]> > > On Thu, May 11, 2017 at 3:47 AM, Martin Landa <[email protected]> > wrote: >> Hi, >> >> 2017-05-11 9:36 GMT+02:00 Luís Moreira de Sousa >> <[email protected]>: >>>> r.mfilter input=blenddem output=blenddem.highpass filter=highpass9.txt >>> 100% >>> Writing raster map <blenddem.highpass> >> >> did you set up correctly computational region? >> >> g.region raster=blenddem >> >> Ma- >> > > https://gis.stackexchange.com/questions/239556/r-mfilter-produces-empty-result > > From the GIS SE question it seems everything is correctly set. In that > case, could you provide us with your data to test it? You can send a > link to it, offlist if you need to. > > Anna > >> -- >> Martin Landa >> http://geo.fsv.cvut.cz/gwiki/Landa >> http://gismentors.cz/mentors/landa >> _______________________________________________ >> grass-user mailing list >> [email protected] >> https://lists.osgeo.org/mailman/listinfo/grass-user > > _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
