I notice that the Gimp can read and work with PGM files in raw and plain
formats so long as the grayscale formats are in the 0-255 range.  However,
the PGM documentation specifies a variant of the raw format in which the
values may go up to 65535.  I have some images like that, and the Gimp
complains about an invalid "maxval".   Other tools like eog(1) and
Irfanview(Windows) read the images just fine.  I have attached one, which
may be small enough to make it through (ungzipped it's just over 37K).

Is this omission intentional?

Kevin O'Gorman, PhD

Attachment: bigraw.pgm.gz
Description: GNU Zip compressed data

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