On Wed, Nov 19, 2008 at 12:36:56PM -0800, Michal Migurski wrote: > Mapnik image output doesn't have a resolution - 96dpi or otherwise, > it's just a number of pixels. > > You seem to be asking whether it's possible to generate output that is > still legible when printed at a higher resolution. It's certainly > doable but would require you to change your stylesheets: larger text, > fatter lines, higher pixel size for map output, etc. A simple > experiment would be to multiply every pixel dimension by 3 and see how > that looks printed at 300dpi. > > I believe Mapnik also offers resolution-independent SVG and PDF > output, but it's not something I've used before.
The Stylesheets all use Scale, I think? Which is DPI dependant. So, if you write a stylesheet for Mapnik -- and its assumption of DPI, since you have to have one in order to calculate a 'scale' -- then you'll need to multiply all the scales by some number in order to have scales that make sense. (This is why OpenLayers prefers 'resolution' -- map units per pixel -- but for obvious reasons, that doesn't work well for something like Mapnik.) Regards, -- Christopher Schmidt MetaCarta _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
