Hello Harry, Harry Bullen wrote:
I remember back in the summer someone mentioned that they had created a uDig plugin that would pull data from google maps. However it's not really legal to redistribute it. So I was looking at http://www.openstreetmap.org/ and they are actually very similar to google maps but with out licensing restrictions. So it may be possible to adapt that plugin to work with openstreetmap. Which I think would be a big turn on for people to use udig.
I've been using osm data in our apps but took a different approach. I wrote a proxy to translate WMS requests into the osm data grid format. So, as far as the client is concerned, it's a normal WMS, which gets image data from the osm site (or, in our case, our own local osm web server), draws the tiles onto an image and sends this back to the client. The optimal resolution is automatically calculated, but there's also a "vendor specific" parameter zoom=[1,18], for the appropriate osm zoom level.
This "WMS" will be made available on the osm svn when I have the time to check the stuff in. It's a handful of java classes, two config files and an ant script. Create the war, deploy and it runs.
A known bug is the image positioning at low resolutions (because I don't use any libraries to make the projections, and the Mercator projection error is not taken into account; can be easily fixed with geotools). But at hi res it works like a wonder :-) (But currently only for WGS 84 :-(
Please contact me off list if you want more info. I have also the WMS on the net, but don't want to make the URL public. If anyone wants to have a look, please drop me a line and I'll send you the URL.
Cheers, Ugo -- Ugo Taddei Fraunhofer Institut Intelligente Analyse- und Informationssysteme (FhG IAIS) http://www.iais.fraunhofer.de Department Knowledge Discovery - IAIS.KD - Working Group Spatial Decision Support http://www.iais.fraunhofer.de/kd.html phone (+49)2241-14-2184 fax (+49)2241-14-2072 Schloss Birlinghoven, D-53754 Sankt Augustin, Germany _______________________________________________ User-friendly Desktop Internet GIS (uDig) http://udig.refractions.net http://lists.refractions.net/mailman/listinfo/udig-devel
