New answers tagged catchment-area
This can be calculated quite easily using Voronoi Diagrams (also known as Theissen polygons) based on Euclidean Distance metrics (i.e. "As the crow flies") in GRASS, QGIS, or ArcGIS. In all three of these platforms, the linked tools take as input a point feature class and output a polygon feature class. If you are trying to calculate based on travel time ...
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