I've got to make a route with my multilinestring table "routebus", but I can't create the node ids... maybe the fact that it's a multilinestring is the problem, but I really don't know how to solve it. I created "source" and "target" fields and tried with this query:
SELECT assign_vertex_id('routebus', 0.00001, 'the_geom', 'gid');
But it returns me an error:
ERROR: query string argument of EXECUTE is null État SQL :22004 Contexte : PL/pgSQL function "assign_vertex_id" line 36 at EXECUTE statement
I'm not really used to PostGIS and pgrouting, maybe un must convert multilinestring to linestring?
I have PostGreSQL 9.1.9 with PostGIS 2.0.1 installed
Thanks in advance for your help