Bonjour Adam, You have just learn what is an edgematch problem! This problem of mismatched lines/polygons at the edge of NTS mapsheets is usually caused by a difference in imagery/photography acquisition dates.
Each year, we were contracting out imagery/photography acquisition over areas convering many NTS mapsheets. The problem arise at the edge of two areas when many years passed between each contract. Things are changing over time out there !-) Daniel -----Original Message----- From: Adam Dunn [mailto:dunna...@gmail.com] Sent: March 18, 2011 14:19 To: Bégin, Daniel Subject: Woods along Canvec Borders When importing Canvec data within a single NTS tile (092H05.x.x), the border between sub-tiles lines up and matches very well. It's a simple task to merge nodes along the border and join ways/areas if necessary. Doing a border between NTS tiles (092Hx) doesn't tend to work out as well. Sometimes it seems to be okay, but sometimes it looks like there's a serious mismatch. In attached screenshot, you can see how natural=wood appears to mismatch from 092H05.3.3 (left of screen) to 092H06.0.0 (right). I don't think it's a bug in how JOSM drawing fills polygons either. Both of those tiles are Canvec 7, downloaded within the past month. Ideas? Adam _______________________________________________ Talk-ca mailing list Talk-ca@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ca
