You'll need Motif or Lesstif if you don't have either you can get lesstif from ftp://pain.csrv.uidaho.edu/pub/hungry/lesstif vgp is know to work with lesstif-0.3. 1) configure 2) make 3) demo If you include files and/or libraries for X-windows and Motif are not in the usually place, you may have to add -I options to the compilation and the full path of the libraries to the link line. This program has been successfully tested on: Machine OS Motif Lesstif -------------------------------------------------------- DEC Alpha OSF/1 2.0,3.0,3.2 X X DECstation 5000 Ultrix 4.2 X HP 9000/380 HPUX 8.0 X IBM RS6000 AIX 2.3 X i486 Linux 1.3.32 X X Sun Sparc Sun OS 5.3 X X SGI Indy IRIX 5.2 X At this point the execuable should be built and you can copy it to any directory in your path (e.g. /usr/local/bin). Optionally, there is also a 'Vgp' app-defaults file. Change the colors as you like and either copy this file to /usr/X11/lib/app-defaults or append the contents to your ~/.Xdefaults or ~/.Xresources files. There is also a man page 'vgp.1'. If you would like these all put in the standard /usr/X11 locations and you have the permissions needed to do so, use: 4) make install Octave is a great Matlab copy from the Free Software Foundation written by John Eaton. If you use Octave there are two m-files included in this distribution which you can use to call 'vgp' from Octave. 'stostr.m' is a little utility to get around the lack of string referencing in pre-version 1.2 octave. vgp.m is the actual m-file to send a vector to vgp. Usage: vgp(set1, set2, set3, ...). Each setn should have be 3xN or Nx3. Octave can be obtained from ftp://bevo.che.wisc.edu/pub/octave