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<H3><A NAME="SECTION00625200000000000000">
Parameters</A>
</H3>
When examining bifurcations of our bouncing ball map, it is useful to graphically
depict (a subset of) the parameter space. Since
<!-- MATH: $0 < \alpha \leq 1$ -->
66#66,
we
choose the interval [0,1] as the default range to display 40#40.
For
17#17,
we choose [0,25] as a default range.
As initial parameter values, we choose
<!-- MATH: $(\alpha, \gamma) = (0.8, 10)$ -->
84#84,
since the dynamics
for these parameter values are fairly interesting.
<P>
To implement these choices, we edit a few more lines in bball_init()
so that the code looks like:
<PRE>
int n_param=2; /* dim of parameter space */
static char *parameter_names[]={"alpha","gamma"}; /* list of param names */
static double parameters[]={0.8,10.}; /* initial parameter values */
static double parameter_min[]={0.,0.}; /* default param min for display */
static double parameter_max[]={1.,25.}; /* default param max for display */
</PRE>
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<ADDRESS>
<I>John Lapeyre</I>
<BR><I>1998-09-04</I>
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