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What? Everything about this comment is wrong. > "Topology ignores such things as corners, distances, and convexity." No, that's what topology is. > "That mak
by nathancahill 13y ago
What? Everything about this comment is wrong.
> "Topology ignores such things as corners, distances, and convexity."
No, that's what topology is.
> "That makes it hard to combine with GIS systems."
No, GIS systems rely heavily on topology. Here are two definitions:
Topology: 1. the study of geometric properties and spatial relations unaffected by the continuous change of shape or size of figures.
Topography: 1. the arrangement of the natural and artificial physical features of an area.
- zodiac 13y agoThe code samples used to demonstrate that library loads a trees.geojson file with features like 'oak' and 'maple', so I think he definitely meant 'topography'. What makes you say it's a topology library?
- nathancahill 13y agoSee the authors comment above. The library does do a lot more than topology, but the see the sections titled: joins, measurement and transformation. These are all topological functions.
- bjourne 13y agoSee this video lecture for a very accessible explanation of what topology is (and is not): http://www.youtube.com/watch?v=kdpbfOzkJzI http://www.youtube.com/watch?v=kdpbfOzkJzI
- morganherlocker 13y agoYour link is referring to algebraic topology. It is one of several subfields of general topology. See the opening paragraph that lists a few others: http://en.wikipedia.org/wiki/Topology http://en.wikipedia.org/wiki/Topology