On Jan 22, 2010, at 7:25 AM, Nicolas Gillet wrote: > > Hello, > > Before to post a stupid bug ticket I prefer asking the mailing list. > > I have several big PNG rasters (4096x4096 PNG image with a pgw world > file) > Those png's have been generated with mapnik 0.6.1 library. > > In version 0.6.1 I could perfectly reuse them a source and generate > tiles > out of them.
How are you generating tiles, and in what png format for source and in the second rendering? png or png256? > With my built version of mapnik 0.7.0 library and plugin, Are you saying that you are using a custom plugin that you have written? > when I render the > same tile I get an horribly bad quality image. Seems to be highly > compressed > actually. > > I build mapnik lib and plugins myself under 0.6.1 and 0.7.0 > If I use the plugin built with 0.7.0 sources I get a wrong image [1] I have read in your image under Mapnik 0.7.0 on Mac OSX and cannot, replicate, it looks fine, when rendering to png and png256 formats. > If I use the plugin built with 0.6.1 sources I get a right image [2] Okay. > If I use the plugin from win32 binaries I get an error (application > crashes) > What plugin? Do you mean, if you use the large PNG raster with the new 0.7.0 windows binaries? > I did not encounter this issue when using a tiff raster I got from > another > source. > Okay, good to know. > So is it a bug, or is there something I missed ? > Could be a bug, but hard to say without more information. Please attach your full XML stylesheet and give more information about which plugin you are using. Dane _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
