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>From: Darren Gallant <address@hidden> >Organization: UCAR/JOSS >Keywords: 200107091620.f69GKI102721 McIDAS HDF AREA Darren, >I was attempting to create an areafile using the following command: > >./makearea.k test.vis 9999 10824 20792 0 1 0 255 >MAKEAREA - Begin >./makearea.k: WRTARA ABORT---REFERENCE TO UNOPENED AREA= 10256 >./makearea.k: Program called abort > >Is my input file too big? Yes. >I looked at makearea.pgm and noticed the following >declarations: > INTEGER IBUF(10000),IDIR(64) > INTEGER*2 JBUF(20000) > CHARACTER*1 KBUF(40000) > > EQUIVALENCE (IBUF,JBUF,KBUF) >Aren't these too small for a Northern Hemisphere visible image? They are certainly too small for the image you are trying to create. >How big can I make these arrays? I know KBUF(65536) is its max under >Solaris. Keeping the equivalence forces IBUF(16384) and JBUF(32768). >This should be big enough. This is a good place to start. >How can I recompile makeare.pgm ? Login as the user 'mcidas'; make the changes to makearea.pgm in the mcidas7.7/src directory; and then type 'make makearea.k'. Check to make sure that the new binary is the one found in ~mcidas/bin bo doing a long list of the file in ~mcidas/mcidas7.7/src and ~mcidas/bin. If it is not the same file, then remove the one in ~mcidas/bin and link the one in ~mcidas/mcidas7.7/src to ~mcidas/bin: cd ~mcidas/mcidas7.7/src rm ~mcidas/bin/makearea.k ln makearea.pgm ~mcidas/bin >Another question. Can I navigate a GOES image using makenav.k? Unfortunately no. The GOES navigation is quite complex. There would be too many parameters to have to enter in a program like maknav.k to be useful. When I discussed this in an earlier email, I suggested that the software you are getting from MSFC/U Hawaii would probably be the best starting point for creating the AREA. I still think that this would be the best approach. Sorry I havn't responded to your earlier email, but I am frantically preparing for the McIDAS workshop which starts one week from today. Tom