From putler at sauder.ubc.ca Thu May 10 16:48:40 2007 From: putler at sauder.ubc.ca (Dan Putler) Date: Thu May 10 16:51:29 2007 Subject: [Can_rnf] Finally some progress to report Message-ID: Hi All, I now have a proof of concept augmented road network file. At this point it only for Greater Vancouver, but that covers roughly half the population base of of BC, and roughly a quarter of all road segments (and probably over one-third of addressed ranged segment) in the province. Over the next week I should have of BC completed. I've uploaded the file the the CanRNF Google group site: http:// groups.google.com/group/canadarnf?hl=en. If interested, you can download the file from there, which is labeled GVRD_RNF_2006.zip. Although, Frank, you'll need to register for the group. I've also created a PAGC schema file for it as well (StatsCan2006.dbf), which I've also put on the CanRNF group site. The file has four fields added to it MUNI_LE, MUNI_RG, FSA_LE, and FSA_RG. The MUNI_LE and MUNI_RG are the municipality the road segment falls in on both the left and right side. At the moment, these two fields are one in the same. For Greater Vancouver, where this is a problem is for Boundary Road (the Vancouver/Burnaby boarder) and 120th Street (the Delta/ Surrey boarder). Having these fields correct will require hand cleaning, which I haven't done yet. The municipality of a segment is attached via StatsCan 2006 CSD polygon layer (which is under the same license as the RNF itself). The FSA's (FSA_LE and FSA_RG) are assigned using representative points for the FSA. I started with the Natural Resources Canada FSA centroids available as a GeoConnections web service, and altered them based on "eyeballing" the Canada Post FSA maps. For a number of FSAs, I put in multiple representative points, making sure that FSAs that were elongated were adequately "represented" and this seems to have worked pretty well based on my limited testing of geocoding with this file. Trying to build the FSA polygons was a really difficult process. Oddly enough, cleaning the road segments over time for improperly assigned segments might provide an easier way to create a FSA polygon layer at some point. To give you a feel for what I've done, I've attached a screen shot where the road segments differ in colour based on municipality. Dan -------------- next part -------------- A non-text attachment was scrubbed... Name: gvrdRNF.png Type: image/png Size: 277035 bytes Desc: not available Url : http://lists.osgeo.org/pipermail/can_rnf/attachments/20070510/f333213e/gvrdRNF-0001.png -------------- next part --------------