Hi there, I've been trying to multilook both single-look and multi-look complex SIR-C data with ENVI with no success. The problem appears when I wish to synthesize the .cdp file generated by the multi-look process. Although the number of rows and columns changes, the header of the new multilooked file is exactly the same as the original one. Does anybody know what happens with especially the offset as well as with the nr. rows and columns of the image when it is multilooked? Any help will be more than welcome. All the best, Guillermo Toyos