pgRouting

Forum #13 - Topic #25 - Message List

road networks based on distance from a point

It's probably some domain knowledge I'm missing but I cannot see a method to generate a network based on a distance (i.e. show me all roads from this point within a distance of 1km).

Is this already available ?

And if not how complex would it be to add ?

BTW: this is similar to GRASS v.net.iso

cph
07/04/07 19:34:41
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  • Message #92

    I'm not sure if I completely understood, but what you're looking for already exists ... I think.

    Did you have a look at DrivingDistance function? You select a start point and then the distance you want to go on your network (ie. 1km). The function returns a set of rows. There is one row for each crossed edge, and an additional one containing the terminal vertex. Here is a simple demo: http://demo.orkney.jp/routing/phtmls/driving.phtml

    Or what do you expect to be different to that function?

    We're always glad to hear new ideas or improvements, so if you have some please let us know.

    daniel
    07/04/07 21:22:36
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