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Results tagged with routing
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user 21952
consist of finding optimal paths along geographic networks such as roads or trail systems.
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 …
- 311
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. …
- 311
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 …
- 311
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 …
- 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)
- 311