It's an interesting idea. I frequently encounter sparse raster data in my own projects - both structured and unstructured.
Where the data are both sparse overall but locally clumpy I guess a collection of images and envelopes would work. For highly diffuse data it might be better to use one of the sparse matrix libraries that are available to provide the backing storage. Michael ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Geotools-devel mailing list Geotools-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-devel