returns a file name writable in ${VARAMMA_OD}
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Returns: | filename (dirname and basename) or -1 if error |
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To prepare the production of ${VARAMMA_OD}/figure08.png:
IDL> fullfilename_out=forout('figure08.png',/OVERWRITE) IDL> print, fullfilename_out /usr/temp/fplod/varamma_d/figure08.png
If asked an other time without /OVERWRITE, the file is not anymore writable
IDL> fullfilename_out=forout('figure08.png') IDL> print, fullfilename_out -1
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