One more question: did Mapnik use the .prj file when reading shape files? And how?
2008/12/2 Damiano Morosi <[EMAIL PROTECTED]> > Hi, > > another hint: if I remove all the srs from the mapfile, the tiles are > generated CORRECTLY while Dane said that the result should be something > screwy... The only thing that doesn't work here are the scale based rules. I > think that Mapnik ignore what the measure unit is, so it cannot calculate > the scale correctly. Maybe introducing a unit="..." param for the map should > be a good thing? > > 2008/12/1 Robert Coup <[EMAIL PROTECTED]> > >> I would assume Proj4 does a no-op if the source and destination SRSs were >> the same, but maybe it doesn't. If it's reprojecting, it does some >> reasonably complex calcuations on every vertex of every geometry, which >> would explain the added time. >> >> In https://trac.mapnik.org/ticket/138 I added a no-op around not >> calculating extents for same-SRS map/layers, but maybe proj_transform should >> do a similar no-op rather than pass it through to Proj4? >> >> Rob :) >> > >
_______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
