[lug] Imagemagick & LZW

[rm at fabula.de]

On Tue, Oct 09, 2001 at 03:32:55PM -0600, Todd Ruskell wrote:
> Running Debian, I've installed Imagemagick 4.2.8-9 and libmagick4g-lzw
> 4.2.8-2
> 
> Using the display command, I can view a compressed gif file just fine.
> Using the convert command, this is what I get.
> 
> $ convert Mid2P1Key.gif test.pdf
> convert: LZW library is not available.
> 
> I can convert to other formats, but I'm really interested in pdf.  My
> understanding was that the lzw library was supposed to make lzw
> compression available.  Do I need something else?  The output from
> Magic-config gives:
> 
> $ Magick-config --libs
> -L/usr/local/lib -lMagick -ltiff -ljpeg -lpng -lXext -lXt -lX11 -lz
> -lpthread -lm

Since Unisys claims copyrights on the LZW compression algorythm Debian
can't include the neccessary Libs in the standard distributuion. If you
need these libraries you need to install 'libmagick4g-lzw' which can be
found in Debians 'non-free' section.


   Ralf Mattes

> An alternative question might be:  Can I get a compressed pdf any other
> way?
> 
> Thanks,
> 
> Todd
> 
> --
> Todd Ruskell, Ph.D.
> Lecturer in Physics
> Colorado School of Mines
> Golden, CO 80401
> 303-384-2080
> Fax: 303-273-3919
> 
> 
> 
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