[postgis-users] Using routing to create polygons of estimated travel distances

[Anton Patrushev]

Hi Simon,

You can try to use Driving Distance function of pgRouting
(http://pgrouting.postlbs.org/wiki/DrivingDistance) - this is exactly
what you need.

Anton.

On Fri, May 1, 2009 at 1:57 PM, Simon O'Malley <simonom at gmail.com> wrote:
> Hi List
>
> Trying to get my head around the easiest way to generate a contour map of
> travel times from a central location based on road centreline network.
>
> We have a central location and need to generate polygons showing which
> properties are with 5, 10, 15 etc minutes of this location.
>
> A road network is present with estimated speeds along each segment so we can
> calculate estimated travel time along each segment.
>
> How do we go about traversing the networking and creating points at say 5
> minute intervals, making sure we are travelling away from the central
> location.
>
> The idea was then to join up the points to create polygons and overlay over
> the property boundaries.
>
> Any ideas/help much appreciated.
>
> Simon
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