About LTPlus

[David Mandel]

On Fri, 6 Nov 1998, Venkatesh Raghavan wrote:

> Hi all,
> Has anyone successfully run LTPLUS on Linux?
> I installed the software on my Linux Machine
> but am getting a core dump when I choose to create map.
> BTW LTPLUS is a raster-to-vector conversion tool that
> is available at http://www.geog.uni-hannover.de/grass/
> 
LTPlus is a pretty neat program which had great potential.
Altho it is dated, it is still one of the most efficient raster2vector
systems around; and certainly the best map oriented one.
I understand that the version distributed with GRASS has
been ported to Linux.  Unfortunately, this version is somewhat 
broken.

John Dabritz wrote and maintained LTPlus as a US Forest Service 
employee.  When USFS dropped support for LTPlus in or around 1992/93, John
and his colaborators had completed version 2.36.  This was the last 
Open Source version of LTPlus; and altho it only ran on SCO Unix it was
much better than the one distributed with GRASS.  (Note:  All of
John's LTPlus versions, including LTPlus 2.36 use SVGA graphics 
which give his LTPlus software better preformance than versions
running under X-Windows.)  

In 1995/96 Dan Haskell ported version 2.36 to Linux, and was selling it
for about $100.00 as proprietary software.  It was an excellent product
which used the Linux SVGA library to get the best preformance of any
LTPlus product I have ever seen.  I don't know what the status of his
product is; but I will check when I see him.  Maybe I can convince him
to Open Source it, but I'm not making any promises.


                                        Sincerely,

                                        David Mandel
                                        Chief Activist
                                        Portland Linux Users Group

 ================================================================
 David Mandel, Linux Activist               dmandel at transport.com
 Internet Provided by:   Transport Logic           (503) 243-1940
                Serving the Pacific Northwestern USA
 Portland  *  Vancouver  *  Seattle  *  Salem  *  Eugene  *  Bend
 ================================================================