From which system:

The data points are from a single variable (usually *x*)
starting from a random point on the attractor or in the chaotic
sea so that you will get a different time series each time you run
the program. For the continuous-time systems, *h* is the
interval between data samples. The chaotic systems are from
Appendix A of Chaos and Time-Series Analysis by J. C.
Sprott (Oxford, 2003). See also my random number
generator.

J. C. Sprott