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Hi Rod, re: > Yes the mag is not set which means its on the default 1. Very good. re: > Can I divide the length of line and elements by 2 since that would > lead to the center point of the box?: > 71-61 = 10 .....LENGTH OF LINE > 155-119= 36...LENGTH OF ELEMENT It seems to me that the center point in file coordinates would be: 66,137 re: > So since size is defined number of lines and elements to be added from > the center....that would seem to make sense to me? SIZE= is the number of lines that the box is high and elements wide, and the box is centered on the LATLON= or LINELE= for PLACE=CENTER. Cheers, Tom -- **************************************************************************** Unidata User Support UCAR Unidata Program (303) 497-8642 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata HomePage http://www.unidata.ucar.edu **************************************************************************** Ticket Details =================== Ticket ID: CRZ-518318 Department: Support McIDAS Priority: Normal Status: Closed