Tagged Questions

pgRouting extends the PostGIS / PostgreSQL geospatial database to provide geospatial routing functionality.

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1
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1answer
311 views

PgRouting Driving Distance crashing postgis server

I haven't used PgRouting much so I'm a little in the dark here. However, I am attempting a driving distance calculation like the one described by Underdark here. My SQL is identical, I have a ...
0
votes
0answers
257 views

assign_vertex_id error

I am trying to test if pgrouting works fine or not. To do so I have created a table containing the following attributes. Columns: gid | length | the_geom | source | target Now my ...
0
votes
1answer
334 views

Do postgres 9.1, postgis 2.0 from stackbuilder and pgrouting 1.0.3. work together?

I am new to pgrouting and I would like to check if the version I have installed works fine with postgres and postgis. I have installed postgres 9.1, postgis 2.0 from stackbuilder and pgrouting 1.03. ...
1
vote
0answers
98 views

Is this pgRouting perfomance acceptable for my tiny server?

I'm testing pgrouting functions in a tiny server with 2GB of RAM and a dual core processor. I wrote a program that create client process and they connect to the server in a specific hour to perform a ...
2
votes
0answers
150 views

Is PgRouting DARP Function still being supported?

I'm asking this, because I need some tool to solve a DARP problem. After researching I found PgRouting had included this functionality in one of its branches. But after installing it, getting stuck ...
2
votes
2answers
815 views

How to find the Shortest Path between two coordinates points using pgrouting A-Star?

In PostGIS I have two tables: an osm road network and a table that contains the start and end coordinate points of each path (i.e. userid, start_x1, start_y1, end_x2, end_y2). I would like to know: 1) ...
2
votes
1answer
2k views

Query failed: ERROR: Operation on two geometries with different SRID

Following the pgRouting workshop here, I have the routing query below: $sql = "SELECT gid, start_id AS source, end_id AS target, the_geom, distance(the_geom, GeometryFromText( ...
1
vote
3answers
599 views

Why is pgRouting shortest route function complaining about wrong source and target IDs?

This question is somewhat linked to underdark post, but I think here it would more helpful: https://underdark.wordpress.com/2011/12/18/osm2po-part-2-pgrouting-on-osm-the-easy-way/#comment-2636 I ...
1
vote
1answer
213 views

It is possible to add A* to the pgrouting plug-in?

I am using pgrouting layer plug-in as described in this post: http://underdark.wordpress.com/2011/12/18/osm2po-part-2-pgrouting-on-osm-the-easy-way/ I am now able to calculate the shortest path using ...
2
votes
2answers
178 views

What is geom_way column in osm2po generated data?

Could anybody tell me the meaning of geom_way column generated by osm2po?
8
votes
1answer
364 views

Which pgrouting workshop or tutorial is most current?

Please recommend pgrouting tutorials or workshops that are most current. I ask because I just read a post that claims a tutorial is deprecated. (see osm2po vs osm2pgrouting: workshop post) I am ...
3
votes
0answers
269 views

Shortest distance from pgrouting with cost not being length: optimal solution

I'm using pgrouting shortest_path_astar with a complicated cost function. It gives back the edges, vertices and costs. I would like to get the total distance of this shortest path (i.e., the sum of ...
3
votes
2answers
355 views

Reinventing the wheel: Public Transit System

I'm building a public transit service in South Africa, and I initially started the project on PHP and MySQL. I've managed to get far with the simple stack, with: Routing algorithm in PHP Data ...
1
vote
2answers
847 views

osm2po vs osm2pgrouting: workshop pgRouting

As osm2po was a more reliable way to convert an .osm I went for that solution to load my date in postgres. In the workshop however the author points out to check the result after osm2pgrouting. The ...
5
votes
1answer
347 views

Is PostGis suitable for Global data routing?

I'm searching quite some time now... Is it possible to load the global routing data into PostGis? What can I expect from a performance point of view? It's for routing purposes only. I've downloaded ...
3
votes
2answers
1k views

How to get started with pgRouting and OSM?

I have followed these instructions to install postgresql and pgrouting on our ubuntu server: ...
0
votes
1answer
306 views

postgis problem with shortest distance calculation

while working with POSTGIS pgrouting, for calculateing the distance between two roads(lines) i got the shortest_path function. But the logic is based on Start_point(Start_id) and end_point(end_id) ...
4
votes
1answer
349 views

estimate travelling time for the route using pgRouting and OSM data

Could someone share with me some ideas or your experience how to estimate travelling time based on the provided route within pgRouting? The problem is that roads inside and outside cities have the ...
5
votes
5answers
475 views

Improve performances on distance coverage routing - PostgreSQL

I have to create layers of land coverage from one point to anywhere around on a given street network for a given distance (ex: FROM house, DISTANCE 30000m) An important factor to understand; I need ...
0
votes
2answers
138 views

dijkstra_sp runs without error in postgres query terminal, but triggers an error in Java

I am running this simple query select id,gid from dijkstra_sp('roads',22,33) This works perfectly fine and returns results in postgres query terminal. However running exactly the same query in java ...
1
vote
2answers
312 views

Routing issues with pgrouting

I was using the pgrouting plugin to display the shortestpath. I used the plugin as suggested by underdark to display the shortest path in qgis. My source node is 283 and my target node is 172. When I ...
2
votes
1answer
466 views

Plot the nodes of the shortest path found by dijkstra algorithm

I am using qgis and pgrouting plugin to find the shortest path between two nodes and display the route. Currently, the plot shows the shortest path. However, I also want to know which nodes the path ...
1
vote
0answers
179 views

About the shortest path returned by pgrouting

I have a couple of questions related to the shortest path returned by pgrouting. I have this result for example. edge_id cost reverse_cost x1 y1 x2 y2 1 ...
1
vote
1answer
224 views

ERROR: type “geoms” does not exist. What version of pgRouting should I use for postgres 8.4 & postgis 1.5?

I am running this on windows 7: Postgres 8.4 postgis 1.5 I installed pgrouting, but I am getting the error: ERROR: type "geoms" does not exist. so my question is: which version of pgRouting should ...
3
votes
1answer
93 views

How to check that a point is outside of a route?

I am newbie in PostGIS and also GIS particularly. I need to check that a vehicle is outside of a route. This route has been defined in advance, and of course it stores in a table: RROUTEDETAIL. This ...
2
votes
1answer
888 views

pgRouting: unable to execute routing_core.sql

I'm unable to execute the routing_core.sql, receiving following error. I'm using pgAdmin III, Windows 7, PostgreSQL 9.1, PostGIS 2.0. ERROR: could not load library "C:/Program ...
0
votes
2answers
227 views

how to build a routeable network for pgRouting with srid 3785

I'm following the pgrouting-workshop http://workshop.pgrouting.org/chapters/topology.html and It works, but in my project I'm working with the mercator projection(srid 3785) and there is not a routed ...
2
votes
1answer
80 views

How to add a new road to an existing pgRouting graph?

I have an existing pgrouting network topology that I would like to add a road to. The road is a linestring from a shapefile and will intersect several roads in the existing network. Is there an easy ...
1
vote
1answer
201 views

postgresql pgrouting define C function function with int* arguments

I want to create a psql-C function with an undefined length list of integers (GIDs for example). An erratic example using V0 function definition that works is like: int mytest4(int *x, int i){ int ...
4
votes
2answers
1k views

tool to find the routing distance between two latitude/longitude points using OSM data

I need a tool to find the distance between two points whose longitude and latitude are given. I am making an application so it will require bulk queries, so i cannot use google maps distance matrix ...
3
votes
1answer
443 views

How to create a QGIS road style for OSM data?

I am trying to use qgis to visualize the shortest path algorithm's result. I managed to import the osm map into qgis But I think it looks kind of different. I was referring to this link and she ...
1
vote
0answers
120 views

Why are start and end segment not partially skipped?

Im using TRSP routing algo. I want to skip partially start and end segment part for point to point routing. Percent along start edge 0.6, percent along end edge 0.4. Route generated but start and end ...
1
vote
0answers
58 views

pgrouting with TRSP in LINUX [duplicate]

Possible Duplicate: Why are start and end segment not partially skipped? Im using turn_restrict_shortest_path algo for routing. For start and end segment it is not skipping the partial part ...
2
votes
1answer
841 views

routing using openlayers and pgrouting

I would like to do a Dijkstra routing using pgrouting and openlayers. I have the downloaded osm data. I am following the workshop given in this link. But since I am very new to this I found it ...
4
votes
2answers
3k views

Installing pgRouting in Windows 7

Can you please help me out in Installing pgRouting in Windows 7 64-bit version. I have been trying it for days. Since I am completely new to this please provide me the initial requirements and steps ...
1
vote
1answer
123 views

What is the difference between the astar_sp and shortest_path_astar functions?

I want to ask about what different of function : "astar_sp" and "shortest_path_astar" ? Do you think the query's result from both of them is same or different?
1
vote
1answer
81 views

Issues when using geometry in pgrouting

I am trying to use pgrouting to get the shortest path. I executed the shortest_path function and in return I got the set of edges belonging to that shortest path. When I got the geometry for each edge ...
3
votes
2answers
459 views

How can I identify oneways at pgrouting

I have set pgrouting and inserted my data with osm2pgrouting . I would like to know how can I find out which way is one way. Also I read that if I assign the reverse_cost of an one way to -1 only ...
1
vote
1answer
181 views

Interpreting the geom_way in the table created using osm2po [duplicate]

Possible Duplicate: Issues while plotting the results of pgRouting shortest path I am trying to actually figure out what this column exactly represents and how to use that in my case. I ...
2
votes
4answers
691 views

How to fix Error: could not access file “$libdir/librouting”?

I am trying to run the sql file of pgrouting-> routing_core.sql in mac. However it displays the following error psql:routing_core.sql:32: Error: could not access file "$libdir/librouting": No such ...
1
vote
1answer
368 views

Issues while plotting the results of pgRouting shortest path

I am trying to plot the shortest path returned by pgRouting. However, I am having some issues. Sometimes it comes out a mess. I have just joined the coordinates of the edges returned by the ...
1
vote
1answer
224 views

Geometry of edges created after using osm2pgsql

I used osm2pgsql to convert osm data to postgresql. Now I have a table with edges and they have geometry like multilinestring. I am not sure what is meant be geometry of an edge. An edge is supposed ...
2
votes
1answer
150 views

Issues when using pgrouting's shortest path

I am having some issues when using pgrouting's shortest path. I am following this tutorial available at http://workshop.pgrouting.org/chapters/shortest_path.html#dijkstra. This query returns a list of ...
1
vote
2answers
512 views

Issues with installing pgrouting in mac

I installed both postgresql and postgis using brew in mac. How can I now install pgrouting. I couldn't install it using brew. Any suggestions?
2
votes
2answers
145 views

Does PostGIS/pgrouting actually come with street info?

I've been looking at getting a new GIS setup going, involving QGIS/PostgreSQL/PostGIS/pgrouting, and so far it has been relatively easy. One thing I want to be able to do is to work out travel times, ...
0
votes
1answer
90 views

shortest_path is not working on large source/target

I tried to find a route using shortest_path function of pgrouting, and it took to the server (postgres) a lot time to process my query (more then 5 minutes!) even I have only 10 rows in my table. ...
2
votes
3answers
362 views

PgRouting routing algorithm from start to end via nodes with restrictions

I have the following situation: I want to find the shortest route from A to B through nodes (C,D,E, etc.) with turn directions and road type filtering. Is there a way to accomplish this using ...
1
vote
1answer
596 views

Generating nodes where edges meet, PostGIS, pgRouting

Recently I was doing some research on how to assign nodes (as POINT type geometry) to existing edges of a topology network and store them in a different table. Call it nodes table. I have all the ...
2
votes
4answers
458 views

Any pgrouting enabled hosting providers?

I am really interested if any of you know about a hosting provider that offers postgis & pgrouting pre-installed? If not, can I just go ahead and purchase a linode hosting account and do all the ...
1
vote
0answers
108 views

OSM_id missing from ways table created by Osm2pgrouting

GIS newbie here so excuse my ignorance if this has a simple answer. I have been playing about with pgRouting and using Osm2pgrouting to load OSM files from Geofabrik. However I just noticed that the ...