Hi Werner:

Just to give some background for everybody, CGM is a well-established open
web standard for vector + raster graphics (see
http://www.cgmopen.org/technical/cgm_standard.html) that was developed long
before the excitement about the SVG standard for vector graphics. If you do
a google search for the terms (cgm viewer), there are many free viewers
available (mostly for the windows platform but there are some Linux ones as
well).  I use the ralcgm application on Linux to view CGM images. Werner, I
suggest you download one of free windows viewers to be sure that the results
you are getting with -dev cgm are acceptable on your platform.

Our -dev cgm uses libcd, which is no longer maintained by anybody but which
works well.  It's largely public-domain software, but the parts of it which
were derived from an early version of libgd necessarily use the same
copyright terms as libgd. The original version of cd1.3.tar.gz has
disappeared from the web, but
http://www.pa.msu.edu/reference/cgmdraw_ref.html keeps a copy of the
documentation (also included in the tarball as cd1.3/cd.html) and points to
a copy of the tarball. We also keep a copy of the tarball (as you know) at
SF to make sure that source code and documentation do not disappear.

Werner, I was very pleased to hear how quickly you were able to configure a
windows build of libcd using CMake. I think your idea of putting complete
instructions on how to build libcd on the PLplot wiki is a good one.
Furthermore, I suggest you put those instructions and the required
CMakeLists.txt file in cmake/external/libcd in our source tree.  (Once
there, I will modify the CMakeLists.txt file for the Linux case if such
modification is necessary.) I also suggest you give your CMakeLists.txt work
some publicity by making an entry at
http://www.cmake.org/Wiki/CMake_Projects (as I have already done for
PLplot).  You never know, somebody might be inspired by your CMake effort
and resurrect libcd as an active software package again.

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the Yorick front-end to PLplot (yplot.sf.net); the
Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
__________________________

Linux-powered Science
__________________________

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