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consist of finding optimal paths along geographic networks such as roads or trail systems.

2 votes
2 answers
506 views

problem transforming pgr route to a line - unexpected extra lines from St_MakeLine

I have created a line geometry from a pgr_dijkstra querry and I am getting an unexpected looking line in qgis. The following image illustrates the problem: The magenta line is the line created fro …
1 vote
1 answer
166 views

ST_Intersects returning incorrect result on routing problem?

I have a table that contains the shortest path between destinations for survey respondents on an osm2po created network. When calculating the shortest path result, I store the geometry in a column. …
3 votes
2 answers
1k views

adding geometries to a source, target table for multiple rows in pgrouting

I am having an issue trying to perform the pgr_dijkstra algorithm and getting back a line in my table for multiple rows. I have a table that has a columns of source, target node id's but I cannot fig …
1 vote

ST_Intersects returning incorrect result on routing problem?

I seemed to have solved the problem by taking this approach: 1) perform create table highwaysinglegeom as select st_union(the_geom) from analysis.po_highway 2) perform the update query above using t …
EconGeo's user avatar
  • 311
1 vote

adding geometries to a source, target table for multiple rows in pgrouting

I have solved the problem with the simple querry update analysis.routing set routeline = (select st_makeline(pgr.geom) , from (select * from pgr_dijkstra('ways',source,target)) as pgr)
EconGeo's user avatar
  • 311