Dear Alex and Alexander, Thank you for your assistance regarding my problem. I do still have access to ArcGIS, so I will dump the entire network to a shapefile. Given that it is the entire London road network, I am a bit concerned that it will perhaps be too large (?) but I will try.
Once I have it as a Shape, could I then use 'Spit' to move it into PostGIS do you think? I am doing some analysis in PostGIS at the moment, so if I could do most of my network analysis in PostGIS that would be great (though would also like to use QGIS for visualisation). I will also try using the RoadGraph plugin which I looked at earlier and it looked simple to use. Regards James > 3. Re: Integrated Transport Network (Alex Mandel) > > Message: 3 > Date: Tue, 21 Jun 2011 01:46:51 -0700 > From: Alex Mandel <[email protected]> > Subject: Re: [Qgis-user] Integrated Transport Network > To: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; charset=UTF-8 > > I agree, dump to shp file as soon as you can, or another more > interchangeable format. If you still have access to Arc that will make > life easier, the OGR driver can't do everything (well not 100% sure). > > Once in QGIS you have the plugin already mentioned, the v.net tools in > GRASS, pgrouting in Postgis and routing in Spatialite as potential ways > of doing similar analysis. > > Enjoy, > Alex > > On 06/20/2011 10:52 PM, Alexander Bruy wrote: >> Hi, >> >> you can use RoadGraph plugin (Plugins-Manage plugins) to find >> shortest paths between two points. I don't know how Integrated >> Transport Network stored in Personal GeoDatabase, but you can >> try to access your data with GDAL (there is a driver for this) or >> export them to shapefile. >> >> Hope this helps >> >> 2011/6/20 James David Smith <[email protected]>: >>> Dear all, >>> >>> I have used ArcGIS over the last 6 months and would class myself as a >>> beginner/intermediate, but would now like to try using QGIS instead. I >>> have been getting on ok with it over the last few weeks, but have come >>> to a point where I would like to load a transport network, in the way >>> that I would have done in ArcGIS. I have the Integrated Transport >>> Network as a Microsoft Access Database / Personal Database at the >>> moment. Is there some way that I can load this into QGIS? And then >>> start to do some basic network analysis such as time and distance from >>> point 1 to point 2? >>> >>> Thanks for your help, >>> >>> James >> _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
