Open Source Geographic Information System (GIS)
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This might be an useful resource even for people using GRASS GIS only.
 
We've created a handy comparison page to help our students who often know ArcGIS but are learning GRASS GIS.
ArcGIS, GRASS GIS, Notes. feature class or feature, vector map or vector. layer, map or map layer, When talking about data, GRASS GIS uses term map in mathematical sense of associating (mapping) values from one space (geospatial coordinates) to another space (values specifying what's there).
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Václav Petráš's profile photoMarkus Neteler's profile photo
 
Feel free to edit!
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What does rolling out cookie dough have in common with DEM generation from #LiDAR  tiles‬? The answer is "buffering". To get nice cookies you must have enough dough surrounding the cookie cutter or the cookie will have a "crumbly" edge. The same holds true when processing LiDAR in tiles. You absolutely need to buffer points along the edges of each tile to avoid nasty artifacts such as empty pixels and distorted elevations. In this article we show how to do this properly with +LAStools using the venerable "fusa.laz" as a tiny example ...
We often process LiDAR in tiles for two reasons: first, to keep the number of points per file low and use main memory efficient, and second, to speed up the computation with parallel tile processin...
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Grindgis.com

Tutorials  - 
LIDAR data has become important technology to create surface model, we have list of website which provide free LIDAR data download.
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In this paper we show how GRASS GIS can be used together with proprietary software to enhance students' knowledge of geospatial science.
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Samuel Fernando Mesa Giraldo's profile photoCarlos Delgado's profile photo
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Based on the blogpost http://anitagraser.com/2015/05/24/how-to-create-illuminated-contours-tanaka-style by +Anita Graser , but using a slightly different set of GRASS / QGIS functions.
In a recent post Anita Graser (aka underdark) showed how to create illuminated or Tanaka contours in QGIS using various functions available in the toolbox and some custom functions. Here I want to ...
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Carlos Javier Delgado's profile photo
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Una vez que ya tienes importadas tus imagenes raster a tu mapset (mediante el comando r.in.gdal) lo que personalmente hago antes de nada es realizar el tratamiento de valores nulos. Es un proceso s...
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#GeoServer 2.6.3 released
The GeoServer team is happy to announce the release of GeoServer 2.6.3. Download bundles are provided (zip, war, dmg and exe) along with documentation and extensions. GeoServer 2.6.3 is a maintenance release of GeoServer recommended for production deployment. Thanks to everyone taking part, ...
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Hello" I use grass70 in my OS OSgeoLive 8.5, when I try install  from  g.extesion "r.stream.distance" or other modules show me this error.
(Thu Apr  9 11:35:51 2015)                                                      
g.extension extension=r.stream.distance svnurl=http://svn.osgeo.org/grass/grass-addons/grass7
Fetching <r.stream.distance> from GRASS-Addons SVN repository (be patient)...
Compiling...
mkdir: cannot create directory '/usr/lib/grass70/docs/man':
Permission denied
make: * [/usr/lib/grass70/docs/man] Error 1
ERROR: Compilation failed, sorry. Please check above error messages.
 help me  please!
grass - Revision 65039: /grass-addons/grass7 .. Makefile · display/ · general/ · gui/ · imagery/ · misc/ · raster/ · raster3d/ · screenshots/ · toolboxes.xml · tools/ · tutorials/ · vector/
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Václav Petráš's profile photoanto rok's profile photo
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Thanks for you help! my solutions was reinstalling GRASS :)
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About this community

Tutorials, Tips, and News Regarding the Open Source GIS Software GRASS. Twitter: @GRASSGIS Youtube: /GRASSGISNews GRASS GIS (Geographic Resources Analysis Support System) is a free, open source geographical information system (GIS) capable of handling raster, topological vector, image processing, and graphic data.
 
Just testing GRASS GIS 7.0.1 on Windows 10 (in VB on Ubuntu)
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Carlos Javier Delgado's profile photo
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How to write a Python GRASS GIS 7 addon, material for a workshop presented at FOSS4G in Como
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Yann Chemin's profile photoCarlos Delgado's profile photo
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Landsat Update - Volume 9 Issue 5 2015. Landsat Mission News. Landsat 9 to Continue Land Imaging Legacy; Sentinel-2A Launch Successful; Landsat 8 Data Users Handbook Available. Landsat Product News. Landsat 8 Thermal Scene Select Mechanism Anomaly; Level 1 Data Format Change Investigations ...
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Carlos Javier Delgado's profile photoCarlos Delgado's profile photo
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r.sample.category: sample given number of points in each class

Generates a given number of random points in each category (class) of a raster and samples others rasters at these points.
Parameters: input=name [required]: Name of input raster map with categories (classes); output=name [required]: Name of output vector map with points at random locations; sampled=name[,name,...] Names of input raster maps to be sampled; npoints=integer[,integer,...] [required]: Number of sampling ...
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Samuel Fernando Mesa Giraldo's profile photoCarlos Delgado's profile photo
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Attendees of last weeks’ #ASPRS  conference were discussing how to respond to +Esri’s proprietary “Optimized LAS” (also known as the "LAZ clone") that threatens the achievements of our open #‎LiDAR‬  formats LAS and LAZ that the community has been using for many years already. Here are five clarifications to five wrong statements overheard at the ASPRS meetings ... (-:
The Open Letter by OSGeo was delivered to ESRI, OGC, and the ASPRS last week and the initial reponses - including an email from ESRI's founder and president Jack Dangermond - are very encouraging. ...
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Sergio Alexander Ramírez Navarro's profile photo
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Please read and sign this "Open Letter" by the Open Source Geospatial Foundation (OSGeo) that demands from +Esri to stop fragmenting the existing and popular open #LiDAR  formats LAS and LAZ with flimsy technical arguments that leave little doubt that this is really about tying people long-terms to their ArghGIS platform. Keep LiDAR open!!!

http://wiki.osgeo.org/wiki/LIDAR_Format_Letter
Cover Letter from the OSGeo Board of Directors. The Board of the Open Source Geospatial Foundation (OSGeo) is presenting this letter to the geospatial community at large. The letter highlights concerns about the need for standards in LiDAR data formats, from many people within the OSGeo ...
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Régis Haubourg's profile photoPaul Meems's profile photoPhillip Davis's profile photo
 
Done!
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Breve introducción a GRASS.
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En esta entrada y las siguientes detallaré aspectos de algunas herramientas del software GIS de código abierto con peor fama: GRASS GIS. GRASS GIS o simplemente GRASS (Geographyc Resources Analysis...
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Samuel Fernando Mesa Giraldo's profile photoCarlos Javier Delgado's profile photo
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Just a thumbs-up for the developers of GRASS GIS, who evidently do not rest on their laurels since their release of GRASS GIS 7.0. Below one of those more visible new features in the GRASS GIS deve...
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chandu sekharreddy's profile photoCarlos Javier Delgado's profile photo
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