Hello, guys! In my work I need to calculate isotherms, heatmaps, etc. on set of points in geotools application. So, I use implementations of such algorithms from package org.geotools.raster.
Alas, Barnes Surface seems to work wrong. I use it like this: BarnesSurfaceProcess process = new BarnesSurfaceProcess(); GridCoverage2D coverage = process.execute(collection, //data "heatmap", //valueAttr 500, //data limit 15.0, //scale 0.3, //convergence 3, //passes 2, //min observations 15.0, //max observations Double.MAX_VALUE, //no data 8, //pixels per cell 40.0, //query buffer envelope, //outputEnv 512, //outputWidth 512, //outputHeight monitor //null monitor ); And it returns coverage full of no data values. Heatmap from the same package works just fine. I use it the same way on the same collection of points. HeatmapProcess process = new HeatmapProcess(); GridCoverage2D coverage = process.execute(collection, //data 16, //radius "heatmap", //weightAttr 32, //pixelsPerCell envelope, //outputEnv 512, //outputWidth 512, //outputHeight monitor //null monitor ); I wonder, what can be wrong with Barnes Surface? -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Barnes-Surface-in-org-geotools-raster-tp5162773.html Sent from the geotools-gt2-users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that Matters. http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk _______________________________________________ GeoTools-GT2-Users mailing list GeoTools-GT2-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
