Digital Geography

QGIS plugins: SEXTANTE

SEXTANTE by Victor Olaya is a powerful plugin that bundles many methods and applications from QGIS in one place and provides a GUI for your processing work flow which is comparable with the ArcGIS ModelBuilder or the ERDAS Spatial Modeler. With this plugin it is very easy to use your GRASS, SAGA and GDAL tools, self-written R scripts and many more. This makes spatial analysis much easier and increases reproducibility. Especially the combination with R functions provides a completely new dimension of working with a GIS as nearly everything spatially can be converted to a data.frame and be consumed by…

ArcGIS tutorial 2: the ModelBuilder

ArcGIS is a geographic-information-system (GIS) developed by ESRI. Being widely used and the sheer amount of functions and add-ons are maybe the important causes for being a big-player at universities as well. Therefore we will present you some basic tutorials for learning and enjoying ArcGIS: Tutorial 1: ArcGIS tutorial 1: how to georeference a map?! Tutorial 2: the ModelBuilder objective Create a model with the ModelBuilder to automate different workflows in ArcGIS. Therefore we will connect input-data with different tools in a model diagram. what do you need ArcGIS 9 or 10 time effort depends on model complexity. minimal 10mins