Hi Luca, As you can see from my site [1][2] I've managed to get things sorted, so I can give you a quick overview of how it works
* Get SRTM data from NASA [3] * Use colouring util from perrygeo [4] to make the coloured tiffs * pre-warp the image using gdal_warp [5] * Use rastersymbolizer on a raster input layer (not gdal input[6]) Hope that helps get you going - most of the work was exploring the dead ends. Cheers, Andy [1] http://www.opencyclemap.org/?zoom=7&lat=53.8&lon=-1.85&layers=B000 [2] http://www.gravitystorm.co.uk/shine/archives/2008/08/17/hill-colouring-on-the-cycle-map/ [3] http://wiki.openstreetmap.org/index.php/Contours#Downloading_data_from_NASA [4] http://www.perrygeo.net/wordpress/?p=7 [5] because mapnik won't warp it for you, so make sure your raster layer has the same SRS as the map layer [5] because gdal_warp gets the coordinates in the geotiff header wrong on my system for spherical mercator warping. I work out the hix hiy etc for mapnik using mapnik's projection code, and put that into a raster input plugin layer definition instead. On Wed, Aug 20, 2008 at 6:30 PM, L N <[EMAIL PROTECTED]> wrote: > Hello, > > has anyone an answer to Andy's question ? > >>Hi All, >> >>I've been looking at shaded relief, as per the mapnik demos: >>http://mapnik.org/maps/shaded_relief/ >>http://mapnik.org/maps/srtm_relief/ >> >>Is the code to convert SRTM -> shaded relief rasters available anywhere? >> >>Thanks, >>Andy > > __________________________________________________ > Do You Yahoo!? > Poco spazio e tanto spam? Yahoo! Mail ti protegge dallo spam e ti da tanto > spazio gratuito per i tuoi file e i messaggi > http://mail.yahoo.it > _______________________________________________ > 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
