The quality, the server can deliver, is really worth the effort. I would be very thankful to discuss this topic and to find an appropriate solution. If someone of my honored readers has any deeper knowledge about what could be going on here, please drop me a line. Somehow I have the impression that the WMS server does something weird internally and this is the reason why they are unable to provide the EPSG:4326 projection by default. And additionally I have to stretch and bulge the tiles horizontally and vertically to get a perfect overlay with the tiles in the neighborhood. But even though I can transform points from one coordinate system to another, I still have to rotate each map tile I get back from the server. In this case TrailRunner requires the WGS84 Spatial Reference System EPSG:4326 but the WMS Server of NRW only understands the Gauß-Krüger Reference System EPSG:31466, which is very common in Europe. To achieve this, I integrated a great package named proj.4 which is simply a framework to transform coordinate systems from one to another. This will open up a very detailed map coverage for the state in Germany with the highest population. I am happy to announce that I finally got the GeoServer of Nordrhein-Westfalen integrated as a download source. As you can see in the middle image, also with overlay contours applied. The other news are terrain maps from Google.
As maps at change often, please regularly empty your map cache. I am very pleased for the quality and detail the service now offers. As a sidenote I realized that openstreetmap really gets a momentum. On the right with satellite imagery and left with. The examples above show a region with the contour overlay applied to three background map sources. The display settings you'll find under Document Settings > Additional Settings > Contour : Show/Hide Hopefully it will stay free for a long time. But the transparent overlay is something being calculated and provided by Jonathan Stott from Earthtools is a cool service anyway. The contour data comes from the same USGS data source as the already known elevation download. Today I added a contour layer to background maps.
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