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June 1999

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1999.06.03 19:48 "Large File Support", by Bruce Forsberg
1999.06.04 03:45 "Re: Large File Support", by Frank Warmerdam
1999.06.04 07:32 "Re: Large File Support", by Rob Tillaart
1999.06.07 07:05 "Re: Large File Support", by Rainer Wiesenfarth
1999.06.08 21:14 "Re: Large File Support", by Peter Smith
1999.06.08 21:58 "Re: Large File Support", by Ed Grissom
1999.06.08 22:52 "Re: Large File Support", by Peter Smith
1999.06.09 01:27 "Re: Large File Support", by Martin Bailey
1999.06.09 06:50 "Re: Large File Support", by Owen Pearn
1999.06.09 14:33 "Re: Large File Support", by Martin Bailey
1999.06.09 08:07 "Re: Large File Support", by Rob Tillaart
1999.06.04 18:35 "Re: Large File Support", by Bruce Forsberg
1999.06.07 13:03 "Re: Large File Support", by Frank Warmerdam
1999.06.09 03:05 "Re: Large File Support", by <glen@lumisys.com>
1999.06.09 13:13 "Re: Large File Support", by Ed Grissom
1999.06.09 13:33 "Re: Large File Support", by Frank Warmerdam
1999.06.09 14:08 "Re: Large File Support", by Ed Grissom
1999.06.09 18:50 "Re: Large File Support", by Chris Barker
1999.06.09 18:41 "Large File Support", by Chris Barker
1999.06.10 13:21 "Re: Large File Support", by Chris Hanson
1999.06.10 13:52 "Re: Large File Support", by Frank Warmerdam
1999.06.10 14:37 "Re: Large File Support", by John Aldridge
1999.06.10 15:10 "Re: Large File Support", by Peter Smith
1999.06.10 16:56 "Re: Large File Support", by Chris Barker
1999.06.14 11:16 "Re: Large File Support", by Martin Bailey
1999.06.14 14:58 "Re: Large File Support", by Tom Lane
1999.06.14 15:30 "Re: Large File Support", by Eric Shapiro
1999.06.14 16:27 "Re: Large File Support", by Chris Barker
1999.06.14 15:51 "Re: Large File Support", by Martin Bailey
1999.06.09 15:52 "Re: Large File Support", by Ed Grissom
1999.06.10 09:48 "Re: Large File Support", by Klaus Bartz
1999.06.10 13:05 "Re: Large File Support", by Chris Hanson
1999.06.11 01:48 "Re: Large File Support", by <glen@lumisys.com>

1999.06.09 15:52 "Re: Large File Support", by Ed Grissom

In a previous message, Rainer wrote:

> Grissom, Ed wrote:
> > [...]
> > - TIFF magic number changes from "42" to "84" (double 42 ??)
> 
> I'd prefer 66 (= 0x42) or 258 (a base 64 noted number 42)
> to keep the meaning behind it
> 
Sounds ok to me.  I kind of prefer the 66. That way it would show up as 42
in hex editors.  My main point was that it must be changed. 

> > [...]
> > A tag is now made up of 16 bytes,  the last field is 8 bytes long, and
> > either contains the data (if it will fit in 8 bytes), or an 8 byte
> pointer
> > to the location of the data.
> 
> If we do changes, our goal should be not to change it again
> two years later. So maybe the following changes should also
> be done:
> 
> - the Count field of an entry should also be 8 bytes. No one
>   will use tiles or strips with more than 4 GB data today,
>   but who knows about tomorrow?
> 
> - the Tag field may be expanded to be 4 bytes to have plenty
>   of tags left for future enhancements.
> 
> 
You are right, of course, and I believe that your suggestions were in a
previous message that I did not read closely enough.   Had I done so, I
would have included them in my summary...  The count field may be necessary
sooner than you think, planar configuration RGB files with 1 line/strip can
get a very large count very quickly with SAR data (typically very long but
not very wide)


--
ed grissom
egrissom@ziimaging.com