Thanks for the response, Dane. I don't know much about proj4 strings, but I don't think they'll help in my situation, because I want to run a separate computation for each point and recalculate its position based on some additional data I have coming out of a database. I'd really like to just be able to call my own Python function, pass in lat/lon and return a new lat/lon. Can I do that with the srs parameter?
Thanks, Drew On Mon, Mar 29, 2010 at 4:44 PM, Dane Springmeyer <[email protected]>wrote: > just set the map srs to the custom proj4 string you'd like to reproject > everything into, and Mapnik+Proj4 should be able to do the rest. > > dane > > > On Mar 29, 2010, at 11:39 AM, Drew Dara-Abrams wrote: > > I'm rendering maps from OSM data (coming from Postgres; I can't get the >> OSM plug-in to work with XML files). I'd like to run a simple Python >> function on the OSM data to transform the coordinates each time a map is >> rendered. This isn't a conventional projection, so I don't know if I can use >> Proj4. Can anyone recommend a way to call a function on the data that gets >> returned from the Postgres query? >> >> Thank you, >> Drew >> _______________________________________________ >> Mapnik-users mailing list >> [email protected] >> https://lists.berlios.de/mailman/listinfo/mapnik-users >> > >
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