Mmm... sounds tasty. Are you saying that Kriging is inferior to thin plate splines generally, or is it likely to be data dependent ?
As an aside: I have vector to raster utilities on my todo list for jaitools - the aim being to generalize the existing GeoTools code into a jaitools module and then bring that back to GeoTools in a geospatial wrapper as aaime did for the raster to vector code. If Jan's interpolation code was available, and subject to permissions, licences etc., it would be fantastic to have this as part of the jaitools module. Perhaps then jgrasstools could depend on that too ? (Sorry for hijacking your thread Diego) Michael On 13 October 2011 20:51, andrea antonello <[email protected]> wrote: > Hi Michael, > >> Another good link which I should have mentioned before is the >> JGrassTools project which is run by one of the GeoTools developers. It >> includes a kriging algorithm written to use GeoTools classes: >> >> http://code.google.com/p/jgrasstools/source/browse/hortonmachine/src/main/java/org/jgrasstools/hortonmachine/modules/statistics/kriging/Kriging.java >> >> I'm cc-ing this message to the author who is a font of wisdom on all >> things to do with landscape modelling. > > lol, that was a good one. Where should I make the downpayment? :) > >> >> A post about the approach you end up using would be much appreciated - >> thanks. > > I would not use the Kriging for lanscape interpolation. > Some time ago I started to port the Interpolation methods created by > Jan Jezek (Thin Plate Spline and IWD) to jgrasstools by adding in it > quadtree support. They are working quite well, but I stopped in the > middle of the testing phase and never touched them again. > In fact I promised Jan I would get back to him like 3 months ago > (sorry Jan, work drawned me), since I wanted to should him how great > his work would look like in OMS :) > I would use those, if I had to choose. In that case right now you > would need to extract the points from the lines and give them an > elevation attribute. You would also pass a gridgeometry and it would > interpolate in the grid points. > Tada! > Well, you noticed: would, would, would. > I am currently promising a lot of stuff around, so I will go on. I > could bring those tools in official experimental jgrasstools land if > Jan agrees and nobody blames me. :) > > Cheers, > Andrea > > > > >> >> Michael >> > ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
