Spatial Analysis of Accessibility of Wells using Map Algebra
Aggregazione dei criteri
In this tutorial we'll apply map algebra to determine the accessibilty of wells. This tutorial was developed together with Kurt Menke (Bird's Eye View GIS).
3. Condition 1: Wells within 150 Meters of Houses or Roads
3.4. Create Zones of 150 Meters Around the Roads
In a similar way we can now calculate the 150 m buffer around the roads.
1. Style the roads layer. Use these classes:
0: no roads
1: dirt road
2: tarmac
2. Repeat the steps used to calculate the zones of 150 m around the houses, but use the roads layer as the Input layer and name the output roads150m.tif.
3. Style the Boolean map. Make the True pixels green and the False pixels red.