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 <[email protected]> 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 > _______________________________________________ > postgis-users mailing list > [email protected] > http://postgis.refractions.net/mailman/listinfo/postgis-users > > _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
