Additional Information: Question about CGM support in plotutils-2.4.1

[David L. Humphrey]

I have some additional information on this problem.  I sat down and decoded
the binary CGM file by hand in a effort to discover the problem.  It seems
that there is an error in the encoding of the first Restricted Text command
starting at byte 0x198.  The 0x0d byte at 0x19a does not belong there.  I
removed it and the Microsoft products read the file properly.

It's odd that the first Restricted Text command is erroneous while the
following two are correct.  I'll peruse the code Monday in an effort to spot
the bug.  If I can find it, I'll submit a correction.  However, I strongly
request that you look for this one, too.

Regards,
David L. Humphrey
Director, Technical Services
Bell Geospace, Inc

 -----Original Message-----
From:   David Humphrey
Sent:   Friday, November 02, 2001 12:10 PM
To:     'address@hidden'
Subject:        Question about CGM support in plotutils-2.4.1

Attached are two test files I produced from plotutils-2.4.1.  The only
difference is that I changed the encoding from "binary" to "cleartext".
Microsoft Word & Powerpoint will display the cleartext version, but report
an error for the binary one.  At first, I thought the Microsoft products
would not display binary CGMs at all, but this is not the case as I have
displayed several intricate ones without problems.

Would you please advise me on where the problem resides?  Am I misusing
plotutils in some way?

Regards,
David L. Humphrey
Director, Technical Services
Bell Geospace, Inc

 << File: binV1.cgm >>  << File: ctV1.cgm >>