I've used nik2img to generate PDFs( Via cairo) that look very nice printed without modifying my XML file at all. If printing is the desired result that may be the way to go.
Jay ----- Original Message ----- From: "Christopher Schmidt" <[EMAIL PROTECTED]> To: "Michal Migurski" <[EMAIL PROTECTED]> Cc: "Mapnik users mailing-list" <[email protected]> Sent: Wednesday, November 19, 2008 12:54:06 PM GMT -08:00 US/Canada Pacific Subject: Re: [Mapnik-users] 300 dpi images with Mapnik? 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 _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
