<u>Spatial Analysis in QGIS</u><br/>
Objectives: Understanding of interpolation as part of spatial analysis
:[http://docs.qgis.org/2.2/en/docs/gentle_gis_introduction/spatial_analysis_interpolation.html Spatial Analysis/Interpolation]
<u>Open Source GIS Blog</u><br/>
:[http://opensourcegisblog.blogspot.ch/2015/03/spatial-analysis-with-qgis-part-i-point.html Point Data]