Category Archives: QGIS

Building QGIS on Ubuntu 13.04

Posted on April 28, 2013 by

Always one of those dreaded moments after updating Ubuntu, to 13.04 this time. Will QGIS compile properly. Not as it turned out, but the solutions were easy and quick, thanks to posts on nyalldawson.net and boringnerdystuff. Ubuntu 13.04 defaults to … Continue reading →

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

Some cool new features in the upcoming QGIS 2.0

Posted on April 4, 2013 by

The upcoming QGIS 2.0 will have some really cool and useful new features. Check for example out the latest blog posts by Anita Graser aka Underdark, where she takes you on a tour of all the new features of the … Continue reading →

Posted in GIS, QGIS, Software release | Tagged , , , , | 6 Comments

Point coordinates to polygon – part I

Posted on January 17, 2013 by

Articles about field studies sometimes (but not always unfortunately) contain coordinates delimiting the boundaries of the field study. What if you want to view those boundaries in e.g., Google Earth? In other words, how to create a polygon layer based … Continue reading →

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Sum up values of neighbouring polygons – a GRASS GIS approach

Posted on January 4, 2013 by

How to sum up values of neighbouring polygons in QGIS? This question was asked on gis.stackexchange, with two interesting answers. One answer explains how to use Spatialite and SQL to achieve this. The other answer, explained in more detail here, presents … Continue reading →

Posted in GIS, GRASS GIS, QGIS, SQLite | Tagged , , , | 1 Comment

From Underdark: New QGIS Symbol Packages

Posted on December 22, 2012 by

Check out this post by Underdark about two sets of new QGIS symbol packages with series of simple fill symbols based on ColorBrewer. Create work!

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Check out the new Landcover Polygon overlay function in the LecoS QGIS plugin

Posted on December 15, 2012 by

The author of the QGIS plugin LecoS came up with  a new feature which might come in handy for some of you: a polygon overlay tool. This tool can extract raster values and save them directly to the vector layers … Continue reading →

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Stratified random sampling in QGIS

Posted on December 3, 2012 by

In my previous post I described how you can create a random stratified sampling using GRASS GIS. Unlike in GRASS GIS however, QGIS has a dedicated tool to do this. You can find it under ‘research tools’ in ‘Vector’ menu.

Posted in GIS, QGIS, research tools | Tagged , , , , , | 3 Comments

Converting an ArcMap layer file into an SLD document

Posted on November 9, 2012 by

Most open source GIS programs can open all most common, and quite a few obscure data format (thanks to the gdal library). What they can’t open is the ArcMap layer files (.lyr).  A layer file defines the symbology used to … Continue reading →

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Opening MODIS tiles in QGIS

Posted on November 7, 2012 by

NASA offers a very convenient web-based tool to select and download the tiles you need; Reverb / ECHO.  The tiles are in HDF format and use the Sinusoidal grid tiling system (proj4 definition: +proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007.181 +b=6371007.181 +units=m … Continue reading →

Posted in Data handling, GIS, QGIS | Tagged , , , , | 4 Comments

You can now vote for your favorite QGIS plugin

Posted on October 8, 2012 by

The list of plugins for QGIS is becoming rather long, which is a testimony to how active the QGIS community is. It does make it more difficult to find and select the plug-ins for your work. And if you find … Continue reading →

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