This is probably a stupid newbie question. I have the sample BaseWMSFactory subclass from http://trac.mapnik.org/wiki/OgcServerSvn rendering fine in an OpenLayers layer using the world_borders.shp that came from somewhere.
If I replace that with the SOCO_PRMD_City_Limits.shp downloaded from the "City Limits" data set on http://www.sonoma-county.org/prmd/gisdata/data_download.htm I get absolutely nothing. This is with that sample code, replacing the poly and line definitions with: poly = PolygonSymbolizer(Color('yellow')) line = LineSymbolizer(Color('red'),.1) and setting SHAPEFILE to '/home/danlyke/code/geo/sonomacounty/City_Limits/SOCO_PRMD_City_Limits.shp' However, if I create a map and render_to_file(...) using the following Python code, I see what I'd expect. Am I doing something stupid with projections? What else might be going wrong? And, yes, I can do this switching nothing other than pointing my ogcserver.conf to the appropriate map factory, with my JavaScript OpenLayers definition zoomed into the right area that shows up what I'd expect with the world borders. ---- Python to render the shape file to a file ---- #!/usr/bin/env python from mapnik import * m = Map(600,600,"+proj=latlong +datum=WGS84") m.background = Color('grey') s = Style() r=Rule() r.symbols.append(PolygonSymbolizer(Color('yellow'))) r.symbols.append(LineSymbolizer(Color('red'),0.1)) s.rules.append(r) m.append_style('Layer PAR_PARCELS',s) layername = 'PAR_PARCELS' lyr = Layer(layername,"+init=epsg:4326") lyr.datasource = Shapefile(file='../sonomacounty/City_Limits/SOCO_PRMD_City_Limits.shp') lyr.styles.append('Layer ' + layername) m.layers.append(lyr) m.zoom_to_box(lyr.envelope()) render_to_file(m,'sonoma.png', 'png') _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
