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Can GRASS's v.net.iso module split networks between nodes on the network, i.e., if I am finding the area within a cost of 400, and there is a line segment with a cost of 800 leaving the center node, will v.net.iso split that line halfway down it? (For the purposes of this question, the center node cost is 0).

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Similar question with pgRouting: gis.stackexchange.com/questions/9837/… –  underdark Jun 23 '11 at 17:18
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2 Answers

up vote 3 down vote accepted

Yes, GRASS's v.net.iso module can split networks between nodes on the network when you use the vector length as cost indication.

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I played around with v.net.iso at one point, and I believe it does indeed split the line halfway. I could be wrong, as this was a few years ago. Luckily, it should be an easy thing to check though by running the tool on a test dataset!

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