Interesting, Now I see the point : Planar graph and Noder are both missing something
It would not be too hard to compute links between roads and the graph nodes by program but it is not so easy with OJ tools only. I think it is possible though : - Create road network with unique ids - Create unique nodes with planar graph - Create initial nodes with extract point and select sequence-id=0 - Create final nodes the way but after a reverse lines operation - Do the joins between nodes and initial/final nodes to transfer node ids - Do the joins between initial/final nodes and roads to transfer node ids For each step, I think there are several ways to go except the last one where you may have to use matching plugin which can match features using only an attribute (road id, which must be a string to be a valid candidate for the matching tool) There maybe some pitfalls I did not see though, Michaël > Hi, > > I want todo this with OpenJUMP and Spatialite > http://www.gaia-gis.it/spatialite-2.4.0/Using-Routing.pdf > http://www.gaia-gis.it/spatialite-2.4.0-4/spatialite-cookbook/html/dijkstra.html > > Spatialite has a tool called spatialite_osm_net which makes a graph from > OpenStreetMap data but I want to use a road data as input. Therefore I am > creating edges with OpenJUMP. However, for routing it would be nice to > transfer road names from the shapefile roads to graph edges like > spatialite_osm_net does. > > -Jukka- > > Michaël Michaud wrote: > >> Hi >> Let me know what is the use case. >> Currently, attribute transfert to faces is a costly post-process >> (included in PlanarGraph plugin but not in Planar Graph calculation) and >> it works only if there is a 1 to 1 relation between polygons and faces. >> Is your use-case a network ? A map with surfaces + linestrings ? >> Other way to get a clean graph with attributes maybe >> - to use noder >> - to post-process planargraph result with matching extension (just >> uploaded the last version) >> Michaël >> Hi, >> >> The planar graph does not create new layer for transferred attributes if the >> Create faces option is not set. >> It might also be better to add the attributes into the Egde layer instead of >> creating a separate Transfer layer. >> >> -Jukka Rahkonen- >> ------------------------------------------------------------------------------ >> Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester >> Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the >> endpoint security space. For insight on selecting the right partner to >> tackle endpoint security challenges, access the full report. >> http://p.sf.net/sfu/symantec-dev2dev >> _______________________________________________ >> Jump-pilot-devel mailing list >> Jump-pilot-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >> >> > > ------------------------------------------------------------------------------ > Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester > Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the > endpoint security space. For insight on selecting the right partner to > tackle endpoint security challenges, access the full report. > http://p.sf.net/sfu/symantec-dev2dev > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > ------------------------------------------------------------------------------ > Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester > Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the > endpoint security space. For insight on selecting the right partner to > tackle endpoint security challenges, access the full report. > http://p.sf.net/sfu/symantec-dev2dev > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > ------------------------------------------------------------------------------ Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the endpoint security space. For insight on selecting the right partner to tackle endpoint security challenges, access the full report. http://p.sf.net/sfu/symantec-dev2dev _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
