Check to see if you already have Gnuplot, by typing 'which gnuplot' in a shell window. If Gnuplot is installed, you need to make sure that it is version 4.0 or newer ('gnuplot --version').
If you need to install Gnuplot, rpms are available from rpmfind.net and gzipped tar files from SourceForge. If you are using Debian Linux, Gnuplot will be downloaded and installed if you issue the following command as root: 'apt-get install gnuplot'.
Check to see if you already have Python, by typing 'which python' in a shell window.
If you have Python, type 'python'. The version number should be displayed. If this is less than 2.3, the scripts may not work with your currently installed Python version. (Press 'CTRL+D, ENTER' to exit.)
If you need to install Python, follow the appropriate instructions for your system at www.python.org. You should install the latest version of Python 2.3, or even Python 2.4 (which also appears to work fine with GaussSum). If you are using Debian Linux, Python will be downloaded and installed if you issue the following command as root: 'apt-get install python python-tk'.
Download a gzipped tar of GaussSum here. This should be untarred into a folder in the usual way, using 'tar zxvf GaussSum-1.0.5.tar.gz'.
If you wish to be added to the mailing list for information on new versions and bug fixes, please send an email to me at baoilleach@users.sourceforge.net.