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Today we celebrate 35 years of GRASS GIS development! 35 years pushing the limits of geospatial data processing quality and performance! Thanks to devs and community members of all times! Cheers everyone!!! @OSGeo @foss4g #opensource #gis #family #fun

salut a tous
pouvez vous m'aider dans model graphique pour une essai de r.gwflow et r.solutransport? merci d'avance

Hi All

I have successfully derived streams, accumulations, basins, direction, and aspect from DEM_STRM. Now I want to produce watersheds from these layers, I know how to do it in ArcMap, but I don't know how to do it in Grass.

Need a hand, please!


I'm new to Grass GIS. I was trying to add vector and raster datasets of ArcGIS to Grass but it seems like Grass does not read the files. Can anyone explain to me why and how can I import them?

Thanks and appriciate your help


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* We are pleased to announce the GRASS GIS 7.4.1 release * What's new in a nutshell After a bit more than one year of development the new update release **GRASS GIS 7.4.1 is available. It provides more than 100 stability fixes and improvements compared to the previous stable version 7.4.1.

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Dear Community, this is a reminder that student application period starts today at

The application deadline is 27 March.

Students are reminded to use the template at

It is also important that students don’t just submit their proposals, but take the time to discuss the proposals with mentors and the community in developers mailing lists, and modify them according to the feedback. Remember that the earlier you prepare your proposals, the more time you have to get feedback and therefore the more chances to get selected. Usually last minute, never discussed proposals are not even considered.

Remember that GSoC is a highly competitive program, so demonstrate your skills, be proactive! Read more at :

See also a presentation at

Start browsing the central ideas page at:

Good luck everyone! The GSoC-OSGeo Admin Team

Like in the case of simple images we can get the RGB numbers of the three visible spectrums using a python function.. how can we get the numbers for the other spectrums if the image is a multispectral image using grass gis ??
#multispectral #image #grass #college_project #satellite_images

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Hello, I am brand new to GRASS GIS (and GIS in general) and I am trying to use this for some real estate research. I want to download the the US Zip boundaries from the US Census Bureau (map with all of the US zip codes mapped out) Here is the link:

Do I need:

'TIGER/Line Shapefiles - New 2017 Shapefiles'
'Cartographic Boundary Shapefiles'

When I download and extract either of them, it seems like there a number of files (cpg, dbf, prj, shp, xml, shx) and when I put all of those files into Linux Grass 7 (into the /home/me/grassdata ), when I open GRASS GIS, if I navigate to either the /home/me/grassdata or /home/me folder, it indicates 'No GRASS location found in /home/me/xxx'. Create a new location or choose different GRASS database directory'

What am I doing wrong?

Thanks in advance!
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