Re: (No Subject)
On Wed, Mar 31, 2004 at 10:57:35AM +0200, Michal R. Hoffmann wrote:
> Julius Plenz wrote:
>
> >* Kenneth Macdoald Karlsen <ken@fiona-victor.com> [2004-03-30 20:13]:
> >
> >>On Tue, 2004-03-30 at 15:00, Manjula Kuntennkar wrote:
> >>
> >>>we are looking for the algorithm of data compression, we need to
> >>>send data the GPS data to the base station, data to be compressed
> >>>is 70%.can u provide the algorithm
> >>
> >>The answer to life, the universe, and everything is 42.
> >
> >
> >That's _one_ answer. But I got a different one.
> >
> >Let's assume you've got a file which is filled with exactly
> >1,073,741,824 spaces in a row. Now look at the compression-
> >effectiveness-"table", got in <20040210182925.GF921@jabberwocky.com>:
> >
> >,---- [ Compression-Algorithms ]
> >| ZIP: 1,043,671 (1028:1)
> >| ZLIB: 1,043,677 (1028:1)
> >| BZIP2: 833 (1289005:1)
> >`----
> >
> >But maybe you don't want to compress a file full of spaces...
> >
> >Julius
>
> And I have another one. He didn't mentioned that it's supposed to be a
> lossless compression. Once I've written the function, it has compressed
> 10kb file into few bytes. Unfortunately, I was not able to uncompress it
> to the original form. ;-) Well, jpeg with max compression level is also
> nice.
http://lzip.sourceforge.net/
Brian
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