Hi, My apologies - this is probably more of a Mapnik question than an OSM one, but I am using the OSM stylesheet, so I hope someone knows the answer!
I am working on a little application to generate PDF map output with points of interest highlighted (ie to produce a 'restaurant guide' or 'tourist attractions guide' for an area) (http://www.townguide.webhop.net). If I select my map size to give 100 dpi resolution, the text size looks ok, but the output is a bit fuzzy (because it is only 100dpi). If I increase the resolution to 300dpi by increasing the number of pixels I tell mapnik to use the text size reduces (or maybe it stays the same in pixels, but is smaller because I am printing at higher resolution) and it is no easier to read - it looks like mapnik uses a different zoom level because extra detail appears that I do not really want. For examples please see http://www.townguide.webhop.net/output/73/townguide_poster.pdf and http://townguide.webhop.net/output/72/townguide_poster.pdf for the 100 and 300 dpi versions respectively. Is there a way to tell mapnik what output resolution I want so that the font sizes, road widths etc. come out correct at different resolutions, or will I have to re-process the style sheet for different resolutions?. Any pointers would be appreciated please! Regards Graham. -- Dr. Graham Jones Hartlepool, UK email: [email protected]
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