Tag Archives: tutorial

Import GRASS function console output as data.frame in R

Posted on January 23, 2013 by

In R you can use system calls or the spgrass6 package to run GRASS GIS functions. To do this, you need to run R from within GRASS GIS. This is as simple as starting GRASS GIS and subsequently starting R … Continue reading →

Posted in GIS, GRASS GIS, R computing environment | Tagged , , , , | Leave a comment

two-minutes video tutorials for R

Posted on April 13, 2012 by

I just came across this blog with (by the time of writing) sixty two-minutes video tutorials on how to do things in R. Especially nice for those who like to learn by watching and listening. But do pay attention while … Continue reading →

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Creating polar diagrams in GRASS GIS

Posted on April 11, 2012 by

There are so many functions in GRASS GIS that it is easy to miss one or two. One functions I recently came across through this tutorial is the d.polar function. This function draws a polar diagram of angle map such … Continue reading →

Posted in GRASS GIS | Tagged , , , , | 4 Comments

Create mobile maps

Posted on March 19, 2012 by

Outdoor sport or field work, a GPS has become indispensable. But what if you want to use your own maps? If you are using an Android smartphone and one of the map viewers available on android market, this is fairly … Continue reading →

Posted in Android, GIS, Mobile tools | Tagged , , , , , , | 1 Comment

Nederlandse (Dutch) QGIS community

Posted on February 13, 2012 by

I just came across the Dutch QGIS site: http://www.qgis.nl. The objective of the website is “to create a platform for native speakers AND to discuss / explore typical dutch ideas or problems”. But the tutorials on this site will not … Continue reading →

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Free online textbooks on geospatial and statistical analysis

Posted on June 2, 2011 by

Geospatial analysis guide I just found, through this blog, a very nice text book on geospatial analysis; Geospatial Analysis – A comprehensive guide by M. de Smith, P. Longley and M. Goodchild. The book covers a wide range of topics … Continue reading →

Posted in GIS, GIS software | Tagged , , , , | 2 Comments

Creating a map using the command line

Posted on April 25, 2011 by

Although I like to carry out GIS analyses using the command line interface (CLI), creating maps is something I still tend to do using the graphical interface (GUI). And most of the time that makes perfect sense to me, creating … Continue reading →

Posted in GIS, GIS software, GRASS GIS, Uncategorized | Tagged , , , , | 1 Comment

On the QGIS wiki: How do I do that in QGIS

Posted on April 16, 2011 by

On the QGIS wiki there is a great section with the self-explanatory title ‘How do I do that in QGIS‘. To quote from the introduction of this section, “it is intended to show how to perform basic GIS operations in … Continue reading →

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R/GRASS connection: more than the sum of its parts

Posted on March 25, 2011 by

GRASS GIS is a very powerfull GIS offering an extensive set of tools for geospatial data management and analysis, image processing, and spatial modeling. The possibility to directly interact with R further improves the geospatial analysis capabilities of GRASS (see … Continue reading →

Posted in Data handling, GIS, GRASS GIS, Modelling, R computing environment | Tagged , , , , , | 14 Comments

Finding and renaming long file names with R

Posted on February 28, 2011 by

I have never given it a though, but there is apparently a limit to the length of file names that can be handled by Windows Explorer of Windows XP. I found out when trying to copy my Zotero folder to … Continue reading →

Posted in R computing environment | Tagged , , , , | 2 Comments