_____________________________________________________________________ FT FORWARD transform Use REAL and COMPLEX files as storage registers to contain your results ie. OPTION MAP REAL COMP FT 1 P(S(k)) S(k) ______________________________________________________________________ TYPE OPTIE 22-OCT-1981 04:22:02.30 >>>.FT OPTION .FT ! num points included in the fft NPTS=512 ! See "MASK" where this file was created OPEN INPUT FILE WITH MASKED DATA FILI=TEST There is one map in the file Reading from the file 76 rows of 2000 pixels in R4 format MAPI=1 ROWI=1:76 CREATE OUTPUT FILE FOR REAL TRANSFORM NMAPS= 1 NPLNS= 1 NROWS= 76 NELS= 512 FILOR=REFT Writing to an existing file 76 rows of 512 pixels in R4 format MAPOR=1 CREATE OUTPUT FILE FOR COMPLEX TRANSFORM NMAPS= 1 NPLNS= 1 NROWS= 76 NELS= 512 FILOC=COFT Writing to an existing file 76 rows of 512 pixels in C8 format MAPOC=1 _____________________________________________________________________