Hello, thanks for that hint. I was using lat/lon values, i think that was my main mistake.
I still need to figure out the correct values and reproject the image, that is right and is what i expected. But now i at least get an image... Best regards, Torsten. Am Sonntag, 19. April 2009 17:07:52 schrieb Michal Migurski: > Hi, > > Mapnik is not capable of reprojecting images, so you'll need to have a > matching projection for your map, your raster image, and you bounding > box. In the XML below it looks like you have degrees for your layer > bounds - those should be expressed in projected units instead, and the > map's srs must match the layer's. > > -mike. > > On Apr 19, 2009, at 3:01 AM, Torsten Mohr wrote: > > Ouch, i'm sorry. I missed that. > > > > I've changed the Layer description and also added some more > > configuration > > according to this: > > > > http://trac.mapnik.org/wiki/RasterSymbolizer > > > > So i also added: > > > > <Style name="raster"> > > <Rule> > > <RasterSymbolizer> > > <CssParameter name="opacity">0.8</CssParameter> > > <CssParameter name="scaling">bilinear</CssParameter> > > <CssParameter name="mode">multiply2</CssParameter> > > </RasterSymbolizer> > > </Rule> > > </Style> > > > > <Layer name="bground_east" status="on" srs="+proj=merc +a=6378137 > > +b=6378137 > > +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null > > +no_defs +over"> > > <StyleName>raster</StyleName> > > <Datasource> > > <Parameter name="type">raster</Parameter> > > <Parameter > > name="file">/local/vid/earth/land_shallow_topo_east.tif</Parameter> > > <Parameter name="format">tiff</Parameter> > > <Parameter name="lox">0.0</Parameter> > > <Parameter name="loy">-85.0511</Parameter> > > <Parameter name="hix">180.0</Parameter> > > <Parameter name="hiy">85.0511</Parameter> > > </Datasource> > > </Layer> > > > > > > Hmm, still the image is not shown. > > > > I wonder why, i tried several changes, also leaving away the srs > > entry. > > Also tried a different (smaller) TIF, tried it at different > > locations on the > > map and different extents and also reordered the layers and tried > > different "mode" settings for the RasterSymbolizer. > > > > I've also tried putting the Layer on top of all other Layers. > > > > > > Hmm, just tried and changed the name of the used Style from "raster" > > to > > "qweqwe". The whole map still gets rendered, no error is thrown. > > It seems > > the DataSource Raster does not use a Style at all, is that right? > > > > It looks to me that this contradicts to the description of the > > RasterSymbolizer in the URL above. > > > > The string "raster" only appears as Parameter name="raster" in the > > osm.xml > > that i use, but nowhere else. > > > > > > Did i misconfigure something? Do i need to supply a Style in a > > different way? > > > > > > In the description it is mentioned that no reproject data (yet), so > > it can't > > be that e.g. the aspect ratio of the input TIF is incorrect? > > > > > > Thanks for any hints, > > Torsten. > > > > Am Sonntag, 19. April 2009 10:27:55 schrieb Luca Delucchi: > >> 2009/4/19 Torsten Mohr <[email protected]>: > >>> Hello, > >>> > >>> i tried another way and added this part to the osm.xml that i use to > >>> describe the map (as the first Layer): > >>> > >>> <Layer name="bground_east" status="on" lox="0.0" loy="-85.0511" > >>> hix="180.0" hiy="85.0511" srs="+proj=merc +a=6378137 +b=6378137 > >>> +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m > >>> +nadgri...@null > >>> +no_defs +over"> <StyleName>world</StyleName> > >>> <Datasource> > >>> <Parameter name="type">raster</Parameter> > >>> <Parameter > >>> name="file">/local/vid/earth/land_shallow_topo_east.tif</Parameter> > >>> <Parameter name="lox">0.0</Parameter> > >>> <Parameter name="loy">-85.0511</Parameter> > >>> <Parameter name="lox">180.0</Parameter> > >>> <Parameter name="lox">85.0511</Parameter> > >>> </Datasource> > >>> </Layer> > >> > >> you must use lox,loy,hiy and hix, in your file you have set only lox > >> and loy. Try with the following code > >> > >> <Layer name="bground_east" status="on" lox="0.0" loy="-85.0511" > >> hix="180.0" hiy="85.0511" srs="+proj=merc +a=6378137 +b=6378137 > >> +lat_ts=0.0 > >> +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs > >> +over"> > >> <StyleName>world</StyleName> > >> <Datasource> > >> <Parameter name="type">raster</Parameter> > >> <Parameter > >> name="file">/local/vid/earth/land_shallow_topo_east.tif</Parameter> > >> <Parameter name="lox">0.0</Parameter> > >> <Parameter name="loy">-85.0511</Parameter> > >> <Parameter name="hiy">180.0</Parameter> > >> <Parameter name="hix">85.0511</Parameter> > >> </Datasource> > >> </Layer> > >> > >> regar > >> Luca > > > > _______________________________________________ > > Mapnik-users mailing list > > [email protected] > > https://lists.berlios.de/mailman/listinfo/mapnik-users > > ---------------------------------------------------------------- > michal migurski- [email protected] > 415.558.1610 > > > > _______________________________________________ > Mapnik-users mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/mapnik-users _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
