XPP is a software program designed to solve systems of differential
equations. Up to 300 ODEs can be solved at one time.
We will learn how to change numerical options, parameters, and initial
data. We will also learn how to create hard copy. You can either run
this little exercise (i) from within Netscape (if you have set things up
correctly); (ii) from a terminal reading along; or (iii) with the
hardcopy version of this.
If Netscape is hard to read, you can change the font under the
Options, General Preferences, Fonts menu. Change to size 14 or 18 (if
you are like me!)
The basic unit for XPP is a file called an ode file that tells XPP the
parameter and variable names and other named things. These files are
editable ascii files. Use your favorite editor! For class, however, I
will give you most of the files so you won't have to learn an
editor. However, there will be occasions in which you will have to
put in your own equations. It is then advisable to learn a bit about
the input files.