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...with a smallest one (1000x1000 pixels). I can read the second image using rgdal package. But the first image can´t be read on my system because if memory limitation (I have about 2GB availabe). So I would like hear from you if anyone have some suggestin in this regards. I have also ArcGis 8.6 ans Erdas 8.3 running on my system and I can read the largest file without problem. But I dont know how clip the large image to keep only those pixels that math to he smallest image coordinates. kind regards, miltinho para armazenamento! [[alternative HTML version deleted]]

Hi list! I have prepared a custom function (below) in order to calculate separability indices (Divergence, Bhattacharyya, Jeffries-Matusita, Transformed divergene) between two samples of (spectral land cover) classes. I need help to cross-compare results to verify that it works as expected (since I don't know of any other foss-tool that will give me quickly some results). Does anybody

...spectral land cover) > classes. I've found a mistake: initially I used "log10" instead of "log" in the definition of the Bhatacharryya index. Thanks to a friend we cross-compared results of the (corrected) custom function(s) (posted here) and the results derived from ERDAS Imagine (a proprietary remote sensing box) and they agree concerning the Bhattacharyya index (and successively the Jeffries-Matusita index). Not sure about the Divergence (and successively the Transformed Divergence) though. There is a subtle difference worthwhile to mention: ERDAS Imagine rej...