The tag has no wiki summary.

learn more… | top users | synonyms

0
votes
0answers
41 views

How to get a time cost related to polyline geometric characteristics in postgis using OSM data?

I'm trying to make an isochrone mapping of the emergency facilities in my region, I'm using a street map loaded in postgis by osm2pgrouting, data is supplied by OSM. The only cost I got for every ...
0
votes
0answers
100 views

Calculating tortuosity

I have the geographic locations of a species of fish over a period of time but want to assess how complex its movement path was. How do you calculate fractal tortuosity, or tortuosity via other ...
6
votes
2answers
656 views

How to calculate tortuosity of a coastline?

I would like to calculate the tortuosity (or fractal dimension) of a coastline within a 1km buffer surrounding a point on that coastline. I have hundreds of points and therefore need a tool or scripts ...