Tutorial: Spatial Analysis of Accessibility of Wells using Map Algebra

3. Condition 1: Wells within 150 Meters of Houses or Roads

Now that we've looked at the metadata of our input layers and we've set up the Processing Toolbox, it's time to proceed with analysing the three conditions:

  • Condition 1: Wells within 150 meters of houses or roads
  • Condition 2: No industry, mine, or landfill within 300 meters from wells
  • Condition 3: Wells less than 40 meters deep

For Condition 1 we'll first look at the houses and we'll do the following:

  • Style the buildg raster layer
  • Create a boolean layer with True for houses and False for other buildings
  • Create zones of 150 meters around the houses
Then we'll repeat the steps for roads.