0

I have to create a catchment area (based on LSOA) for the 19 underground stations within Camden borough and it has to be in a polygon vector file. I know I have to somehow group the SOAs but don’t know which geoprocessing tool to use.

Improve this question
2
  • 1
    What software do you use or can use? Do you have a road network data?
    – Alex Tereshenkov
    Dec 2, 2013 at 18:23
  • 1
    Can you define LSOA & SOA, please?
    – RyanKDalton
    Dec 2, 2013 at 19:24

1 Answer 1

Reset to default
1

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 (i.e. drive time), the problem becomes more difficult. See this link for more information if that is your case.

Improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.