On Jun 26, 2011, at 12:56 PM, Magnus Bäck wrote: > On Sunday, June 19, 2011 at 20:27 CEST, > Magnus Bäck <[email protected]> wrote: > >> I'm using Mapnik with OSM data and my own GPS tracks to render >> high-resolution PNG images of my travels. I've converted the >> original GPX file of a long train ride into a shapefile and >> added it to a layer of the map with a line symbolizer. >> >> Unfortunately, in a number of places the track is crossed by >> a line that appears to be perpendicular to the track. A low >> resolution cropped sample of what it looks like can be found >> at http://elwood.jpl.se/~magnus/crossed-track.png. > > FWIW, filtering out adjacent points that are <100 m apart made > the map render perfectly with no crossing lines. I didn't need > any better resolution anyway. Still curious to know why I got > the described behavior in the first place though, and to know > if there's any way to avoid it without preprocessing the data.
Magnus, Just looking at your example "crossed-track.png" now. I don't see any way those could be rendering artifacts, but perhaps I'm overlooking something. Can you post your raw data somewhere so I can take a look? Dane > > -- > Magnus Bäck > [email protected] > _______________________________________________ > Mapnik-users mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/mapnik-users _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
