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From: ycs16a03@merrimack.edu
Newsgroups: comp.graphics
Subject: GIF files & LZW compression
Message-ID: <21142.27b2f56a@merrimack.edu>
Date: 8 Feb 91 19:00:58 GMT
Organization: Merrimack College, No. Andover, MA
Lines: 13


     I need some fairly specific info on the LZW data compression used in     
GIF files.  So far, I've managed to figure out how the compression/data       
codes are stored, how their size can vary, etc., and I have no problem        
extracting codes from a file.  What I'm not so clear about is what to 
do with them next.  I know you're supposed to organize them in a table        
of some sort, and the compression codes act like indexes in the table,        
but that's about it.  Can somebody explain how to decompress these things?    
I'd prefer just a general algorithm/explanation, but code is OK too.  

                                          Thanks in advance,  
                                          Steve Borden