>> What I have not seen in the API, any example code or user guides I have >> looked at is >> straightforward a way to query the values of one or a group of cells in a >> grid, and to >> perform simple map algebra on one or more grid layers based on the cell >> values. In >> other words, simple raster GIS calculation and overlay functions.
Hi Dan - I'm working on a similar-ish things and am half way through porting a c++ landscape model, which used simple 2d arrays to store raster data, to a java/geotools version. The nutshell summary is that geotools gives you all the nifty georeferencing / gis I/O stuff while for map algebra you go one level down and interrogate the raster data using Java Advanced Imaging. For some common operations, like convolution (= neighbourhood analyses), there are geotools wrappers for the JAI classes/methods. Have a look at: http://javadoc.geotools.fr/snapshot/org/geotools/coverage/processing/operation/package-summary.html > You will find that there was a google summer of code project covering > some of the ideas of a "grid calculator"; I am not sure if it was selected. > I do recommend you check out this project - http://jgrass.dev.fsc.bz.it/ > it does a bunch of raster stuff. Cool !!! I hope it's happening. Thanks Jody. Michael ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
