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Second release candidate GRASS GIS 7.02
The second release candidate of GRASS GIS 7.02 has been released, providing further fixes and improvements. See the official announcement for more information and the download links. A big thanks to...
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Importance of spatial data accuracy – of protected areas
Geographic information systems (GIS) tool are becoming increasingly important in conservation and natural resource management planning and implementation. The good news is that it is also getting...
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Picture Pile; play and help science
There is a successor of Cropland Capture, Picture Pile, from the people behind Geo-Wiki. Like Cropland Capture, this tool / game uses a citizen science approach, in this case to track deforestation....
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GRASS GIS 7.0.2 released
For those who haven’t seen it yet, GRASS GIS 7.0.2 has been released! See here for the announcement and here for a detailed overview of all the changes (over 190 of stability fixes and improvements...
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Finding open data for the Netherlands
Open data is becoming increasingly important and there are considerable advantages, such as accountability, cost and time savings for users, easier knowledge sharing and increased efficiency in public...
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The r.series function applied to a range of values
One of the fundamental functions in GRASS GIS is the r.series function. It makes each output cell value a function of the values assigned to the corresponding cells in the input raster map layers. I...
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Compiling the gdal-grass plugin for GRASS 7
The idea of the GDAL-GRASS plugin is to directly access GRASS raster and vector data from outside. Any GDAL enabled software (QGIS, R, …) can read and write through the plugin from the GRASS database....
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Metadata management in GRASS GIS – save your metadata as PDF
The metadata support in GRASS GIS was seriously improved with the introduction of a new metadata management tool back in 2014 during the Google Summer of Code of that year. The addon added tools for...
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GRASS GIS addon to create smoothed legend image
I just uploaded a small addon for GRASS GIS, r.out.legend, with which you can quickly create a smoothed legend image for floating point raster maps (continuous values as opposed to categories). You...
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GRASS GIS 7.0.3 RC1 is out
The first release candidate of GRASS GIS 7.0.3 is out. This version includes 160 stability fixes and manual improvements, and perhaps most exciting for many GRASS GIS users on Windows, there is now...
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Plot of temporal data sets in GRASS GIS
One of the new modules in GRASS GIS 7.03 (RC1) is g.gui.tplot. It is part of the temporal data processing framework (TGRASS) introduced with GRASS GIS 7.0 and lets you plot the values of one or more...
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QGIS 2.14 ‘Essen’ has been released
The QGIS development team has released version 2.14 of QGIS. This is a special release since it is designated an ‘LTR’ (Long Term Release), which means it will be supported with back ported bug fixes...
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Update of r.forestfrag addon
I just updated the r.forestfrag addon for GRASS GIS. The addon, which I described before, was developed based on an script by Sylla consult, and can be used to characterizes the degree of...
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Sample raster values at point location in QGIS – yet another way
A while back I wrote how one can sample raster values at point locations in QGIS using the Saga function ‘Add grid values to point’, which is available in the processing toolbox. Recently it was...
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VIF stepwise variable selection
Abstract In modelling, multicollinearity in the set of predictor variables is a potential problem. One way to detect multicollinearity is the variance inflation factor analysis (VIF). In GRASS GIS, the...
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Use R to get gbif data into a GRASS database
Introduction GBIF The Global Biodiversity Information Facility (GBIF) is an international open data infrastructure that allows anyone, anywhere to access data about all types of life on Earth, shared...
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Climate data sets, which one to select?
For species or vegetation modelling, one of the first choices to make is the selection of explanatory variables, which in most cases will include climatic or bioclimatic data sets. One of the most...
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A GRASS GIS addon to upload raster values and labels to a point layer
A new GRASS GIS addon to upload raster values and labels to a point layer
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The first release candidate of GRASS GIS 7.2.0 is out
I have been using the development version for some time now, and all I can say is that you definitely should give the new GRASS GIS 7.2.0RC1 release a try. It is, in my experience, very stable, and it...
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Saving space on your HD – null file compression in GRASS GIS 7.2
The GRASS GIS development team recently released a new stable major release, GRASS GIS 7.2. The release brings more than 1900 fixes and improvements since the previous stable release 7.0.5. You’ll find...
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