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Hi Trung, re: > Below is the message I got when I tried to display one of the AREA files > produced by my application. > > IMGDISP LOC/AREAS.2205 > > Beginning Image Data transfer, bytes= 310688 > IMGDISP: loaded frame 1 > IMGDISP: done > > But The image was blank. Similar problem with several other AREA files. > Do you know why? Thanks. Question: - even though the frame(s) is(are) blank, can you draw a map (e.g., 'MAP SAT') If the MAP command fails, it is likely that one of the directories in your $MCPATH contains a file named Frame1.0 that you do not have write permission for. If this is the case, the information that is needed to be written will not be written and a blank, un-navigatable display will result. You can test this idea by running DMAP from your McIDAS Text and Command window: DMAP Frame Where does McIDAS find Frame1.0? Is it different than for other Framen.m files? If you do have an unwritable copy of Frame1.0 in your $MCPATH, you will need to delete it before things will work. Comment: a non-writable copy of Framen.m can be created by a user other than yourself if its $MCPATH included the directory. This situation typically only happens when one runs a script as a different user and the needed McIDAS environment is not correctly setup in that script. 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: QNX-338397 Department: Support McIDAS Priority: Normal Status: Closed