QGISHydro Webinar 3: Spatial Analysis using Map Algebra

In this series of 7 free webinars during the Corona Crisis, Kurt Menke and Hans van der Kwast demonstrate the 7 chapters of the book QGIS for Hydrological Applications - Recipes for Catchment Hydrology and Water Management. In this webinar we demonstrate how to perform spatial analysis with raster data in QGIS using map algebra. Join us next Friday from 9 pm CEST / 7 pm UTC at http://loc8.cc/qgishydro The book is available at http://locatepress.com/hyd 0:00 Start QGISHydro Webinar 3 9:39 Introduction to demo map algebra 12:27 Start demo map algebra 18:05 Calculate boolean layer with raster calculator 20:51 Using the proximity (raster distance) tool 27:40 Settings of the Processing Toolbox 28:30 Reclassify raster by table 35:22 Calculate depth to water table 40:18 Combine all criteria with AND 42:55 Convert pixels to point vector 45:27 The Point Sampling tool 49:40 Styling the points