You forgot binmode. Perhaps you didn't use a Windows system, even though you're using Windows BMP files?

Some other ideas: you can essentially use an offset with unpack by using a "skip a byte" code with a multiplier. That would be far easier than using ord arithmetic and substr. How about (untested) 

my ($col, $row)= unpack ("x18 v2", $temp);

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—John

In reply to Re: Table Pictures by John M. Dlugosz
in thread Table Pictures by fenonn

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