Dear everybody. I tried the tutorial on the site recommended to set up the network topology. There was a need to include the routing_topology.sql definitions into the database. I did that. But I’m stuck at this error now:
VSDelhidb=# SELECT assign_vertex_id(‘roads_line’, 0.0002, ‘the_geom’, ‘gid’);
NOTICE: CREATE TABLE will create implicit sequence “vertices_tmp_id_seq” for serial column “vertices_tmp.id”
CONTEXT: SQL statement “CREATE TABLE vertices_tmp (id serial)”
PL/pgSQL function “assign_vertex_id” line 15 at EXECUTE statement
ERROR: query string argument of EXECUTE is null
CONTEXT: PL/pgSQL function “assign_vertex_id” line 36 at EXECUTE statement
Sadly, I’m not able to debug this error. Please help me here.