Greetings, Firstly, PostGIS continues to rock! Thanks so much for this software...
My question is that I have a rivers linestring table and a political boundaries table (US counties) polygon. I am wishing to extract the portion of the river geometry that lies along a county border. Of course, these two layers don't have the same individual point precision, so I suspect some buffering, simplification is necessary. I am not seeking anything exact, but something like if the river and a county border are within a few hundred meters of each other for some distance along the river and county border.
I can't seem to figure out which functions could accomplish this task, or if it is possible. Currently, I have no issue finding points of intersection, so perhaps that is part of the solution that is staring me in the face :)
Thanks! daryl _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
