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April 2004

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2004.04.06 22:29 "Mailing list archive updated", by Joris Van Damme
2004.04.07 00:19 "Re: Mailing list archive updated", by Frank Warmerdam
2004.04.07 10:27 "Re: Mailing list archive updated", by Joris Van Damme

2004.04.07 10:27 "Re: Mailing list archive updated", by Joris Van Damme

> Joris,
> It looks great!  I have updated links to it on the web site.

Thank you.

> It was interested to review some of the old email.  One thing I noticed, is
> that it seems (I could be wrong) that threads aren't held together between
> months.  Is that true?

I'm not sure what you mean, so please let me explain.

I considered thread relationships the single most important relationship between
the mails. So any mail part from a thread that started, say April 99, is listed
in April 99, even if that mail itself is dated May 99.

What are thread relationships?
- It's got something to do with the title, subject line, or whatever you call
it. But that's not scientific proof of thread relationship, since, especially in
the old days, people quite often changed the subject line. And the subject line,
even if it's unchanged, does only indicate membership of a thread, not the exact
- It's got something to do with the 'References' included in the mail's header.
But that's not scientific either, some people used to respond to any mail in the
mailing list and simply changed the subject line to start a new thread. That
way, they had already filled in the 'To' line. Also, in the old days, and in
many mutilated parts of archive, there was no such 'Referenced line'.
- It's got something to do with the Date. Dated correctly, a mail in April 99
cannot be a response to a mail in May 99. But not all mails are/were dated
- It's got much to do with quoting. In fact, that's how we humans percieve
thread relationships. You know what I'm answering to because I quoted you.

So my code kinda takes all these things in account, and derives statistical
indications from that, and build thread from that. Most important factor is the
quoting. It's not exact, and will not ever be, but from what I've seen sofar, it
does as good a job as any human could do.

There could be a very rare exception, where it has not done a perfect job.
(Perfect in the sense of 'as good a job as any human could do'.) Whenever you
are anyone sees any such occurance, or anything other that could be improved, I
very much appreciate if you drop me a line at,
stating what mails/thread exactly (URL will do) and how you think it could be
improved upon.

Even though the archive contains some 4.500 messages, I plan to next browse
through them, manually, one by one, in time. So any place where something is not
as perfect as it should be, is bound to get improved upon.

> Also, I would like to point people to the following thread regarding
> TIFF files larger than 4GB:
> Despite soon good discussions there never was any agreement or progress.

Yes! Once Google has indexed the new archive and thus 'local Google' is working,
I think you'll see confirmation of the fact that the 'TIFF 7.0' or 'TIFF >4gig'
issue has been one of the most occuring topics over time, throughout the years.
From what I've seen assembling this archive, I can also confirm that indeed
there was never any agreement or progress, that's very true!

Joris Van Damme
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