Hello ThinkGeo,
one question on your online based data layers (Google, Bing, OSM.....). If I zoom in to zoomlevel 20 - Bing layer throws an exception because there are no tiled images for this zoomlevel provided by Bing. This means I can not display my data on the Bing background in deeper zoomlevels.
Is not possible to catch the images for the deepes zoomlevel provided by BING and scale those data down and display it also in zoomlevel 20? I know that the resolution will get poor if I zoom to deep but I think our customers will accept this behaviour since it is similar to displaying raster data with world file.
Thomas