In <Nov.10.00.59.59.1992.29852@gandalf.rutgers.edu> deatz@gandalf.rutgers.edu (Gregory H Deatz) writes:
>I know that this question has been posted to the group before, but I am looking for a compression method (preferably extremely portable code) that is best
>in compression (*not* speed) for text files exclusively (or not). PostScript
>files tend to be extremely cumbersome, and pkzip just doesn't do the job to
>make it feasible to transfer most ps files between a dos machine and a unix
>machine when the modem speed is 2400 bps.
>I'd like to have some code or two identical packages: one for unix, one for
>msdos, so that a 500K text file will be considerably smaller than 500K, i.e.
><< 100K. Does anyone have an answer for me either negative or positive? Speed
>is of no concern to compress the files when it will most likely take much less
>time than the 20-30 minutes for file transfer with pkzip techniques, and it
>is also time consuming to generate the ps files from wp51.
If you want the best there are three options. Higher order arithmetic
compression (Nelson wrote some of those). Ashford compression (C source
included in my LDS_10 package I uploaded to garbo.uwasa.fi (still not
available :-()). And SAKDC from Ross Wiliams (he wrote some book on this).
SAKDC is the best one, Ashford comes close and is freely available.
Notice you get what you asked for, these are VERY slow.
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