On Wed, Nov 26, 2008 at 09:57:21AM +0000, Artem Pavlenko wrote: > > On 24 Nov 2008, at 18:47, Jay Douillard wrote: > > > I've added a page to the trac wiki around this topic > > > > http://trac.mapnik.org/wiki/ScaleAndPpi > > Please consider it a first draft! > > > Great, thanks Jay! Just to clarify, scale denominators (Layer and > Rule objects) are both using 'standard' pixel size. I think I got > these ideas from SLD spec. I'll need to check.
Yeah, this is 90.smethingsomething (*not* 92). "The "standardized rendering pixel size" is defined to be 0.28mm 0.28mm (millimeters). Frequently, the true pixel size of the final rendering device is unknown in the web environment, and 0.28mm is a common actual size for contemporary video displays." So, 1 dot /.011023 inches: 90.7142861 dpi. Regards, -- Christopher Schmidt MetaCarta _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
