A few weeks ago, the city of Vienna released a great dataset: the so-called “Flächen-Mehrzweckkarte” (FMZK) is a polygon vector layer with an amazing level of detail which contains roads, bu...
https://anitagraser.com/2015/04/17/routing-in-polygon-layers-yes-we-can/
How do you objectively define and compute which parts of a network are in the center? One approach is to use the concept of centrality. Centrality refers to indicators which identify the most imp...
https://anitagraser.com/2015/03/07/computing-network-centers/
This is something I have been wanting to do for a long time: map which areas of Vienna have fast access to a certain kind of infrastructure. Now, I finally found time and data to perform this ana...
https://anitagraser.com/2011/07/24/infrastructure-coverage-based-on-open-data/
This year, three QGIS projects made it into Google Summer of Code. Congratulations to all successful students! These are the accepted OSGEO projects: QGIS SAGA interface for QGIS DBManager plugin...
https://anitagraser.com/2011/04/26/google-summer-of-code-2011-accepted-projects/
The following video by soerengebbert shows the latest developments in OS WPS applications: PyWPS (using wps-grass-bridge to integrate GRASS modules as WPS processes), GRASS 7, and QGIS using the ...
https://anitagraser.com/2011/01/28/qgis-with-wps-plugin-in-action/
QGIS and GRASS in Local Government Bushfire Hazard Mapping – A Case Study.
https://anitagraser.com/2011/01/18/a-new-qgis-grass-case-study/
This post describes how to calculate raster profile information (altitude changes to be exact) for a road vector layer from a DEM. DEM source is NASA’s free SRTM data. The following script is b...
https://anitagraser.com/2010/12/21/calculating-profile-information-in-grass-and-python/
You can call almost any function in Python, using “grass.run_command(“function”, ….)”. For your inspiration, you find GRASS Python scripts in their SVN.
https://anitagraser.com/2010/09/07/calling-grass-functions-inside-a-qgis-python-plugin/