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pgRouting extends the PostGIS / PostgreSQL geospatial database to provide geospatial routing functionality.
0
votes
1
answer
413
views
from coordinates can i find from multilinestring from database
Hello i have the coordinates from two points(x,y) and i have a database with roads and i want to find with dijstrak algorithm wich road i take but the algorithm want source and target but in my applic …
1
vote
1
answer
279
views
problem in pgRouting with data from google earth
Hello i am new in forum an in Postgesql,postgis and pgRouting.
I try to make a pgrouting for my city roads. … 26.7095018,37.8014089,0.0
</coordinates></LineString></MultiGeometry>'),4326));
Update After the inserts i create topology and other step from the
http://workshop.pgrouting.org/chapters/topology.html for make a pgRouting …
2
votes
1
answer
647
views
Using pgrouting and algorithms in PostgreSQL?
I am trying my first pgrouting in a roads shapefile I load it in PostgreSQL first, the table has osm_id, gid, name, ref, type, oneway, maxspeed
Then I add columns source and target in table:
ALTER TABLE …
3
votes
2
answers
205
views
Can pgr_dijkstra use a boolean column for routing?
I want to use Dijkstra algorithm. I would like to have the algorithm find a route based on a boolean traffic column, using only roads where the boolean column value is true.
The code below does not …
1
vote
1
answer
414
views
how to Find nearest line for the given point from a collection of lines?
I have table with lines(linestring).For a point wich i give it , I want to find out nearest line in point.
I almost developed a query, but it is return the same line every point i give.
the query
…
5
votes
0
answers
241
views
A* pgRouting issue with x1,y1 and x2,y2 values
I am trying to use the A* algorithm in a topology I have made in PostgreSQL. I can fill the x1,y1 and x2,y2 the latitude/longitude, but I have read that the same version has problems with ST_StartPoin …
1
vote
1
answer
2k
views
Using Pgrouting dijkstra algorithm in PostGIS?
I own two tables one with streets and one points, i use the table with the roads to calculate routes with dijkstra algorithm. But I want when someone add one point in the table Point and this point is …
5
votes
4
answers
10k
views
Take from multilinestring the start and end points
I have to use the A* algorithm and my geometry is in multilinestring and I want to take stratpoint(x1,y1) and endpoint(x2,y2) .
I use this queries but the columns after the execute is still empty
UP …