_____________________________________________________________________ CR CROSS-CORRELATE Use REAL and COMPLEX files as storage registers to contain your results ie. OPTION MAP REAL COMP CR 2 P(SxT) S(k)xT(k) ______________________________________________________________________ TYPE OPTIE 22-OCT-1981 04:23:01.34 >>>.CR OPTION .CR OPEN INPUT FILE WITH COMPLEX TRANSFORMS FILI=COFT ! See FT.DOC where this was created. There are 3 maps in the file Reading from the file 76 rows of 512 pixels in C8 format MAPIC=1 ROWI=1:76 MAPOC=2 OPEN OUTPUT FILE FOR REAL DATA FILOR=REFT There are 3 maps in the file Reading from the file 76 rows of 512 pixels in R4 format MAPOR=2 _____________________________________________________________________