On Fri, Dec 2, 2011 at 4:56 PM, john whelan <jwhelan0...@gmail.com> wrote: > Personal view - why not just import the Canvec data? > > If you use keeprite to have a qeikc look at the area > http://keepright.ipax.at/report_map.php?zoom=11&lat=45.41013&lon=-75.64619&layers=B00T&ch=0%2C30%2C40%2C50%2C60%2C70%2C90%2C100%2C110%2C120%2C130%2C150%2C160%2C170%2C180%2C191%2C192%2C193%2C194%2C195%2C196%2C197%2C198%2C201%2C202%2C203%2C204%2C205%2C206%2C207%2C208%2C210%2C220%2C231%2C232%2C270%2C281%2C282%2C283%2C284%2C291%2C292%2C293%2C311%2C312%2C350&show_ign=1&show_tmpign=1 > it appears that some roads aren't connected. Visually it prints and shows > on the web fine but the routing programs can't use it. Also manually > transcribing road names from CANVEC may introduce errors that are difficult > to detect except by labour intensive manual inspection. The CANVEC data has > been verified already.
I didn't manually transcribe road names from CanVec, I copy/pasted them. Good call on the connectedness; it was sloppy for me to upload before verifying that. My reason for not just using Canvec was 2-fold: 1. CanVec (at least in MB) is missing all one-way tags on roads, meaning there is some cleanup anyways. 2. It was easier to just re-draw the roads rather than trying to adjust the CanVec roads. > The other concern is when you are working with Bing or any aerial photograph > when was the image taken? When someone comes to update the map a CANVEC > import gives some indication of version ie 6.0 etc so its a little easier to > see the changes when a new import is available. I'm quite familiar with these areas; further the MLI Imagery is from 2009; CanVec is missing many of the roads I got from the MLI imagery. > > This is a purely personal view but ask yourself why CANVEC uses tags such as > source CANVEC 6.0. Fair enough; I should probably put a year for the MLI imagery on these roads, since that is something versioned. I dunno, I could have just went with Canvec entirely, but I figured the point of OSM wasn't to just import Canvec, but instead to try and create a unique fusion of data from a number of sources. I've used Canvec in its entitrety in the past where no other better sources of information were available. In this particular area I felt it best to use a fusion of data sources. Tyler _______________________________________________ Talk-ca mailing list Talk-ca@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ca