Good overview of dynamical systems with numerical calculations of Lyapunov exponents.
https://drive.google.com/open?id=0B9oPg7GYw1qnTnIwenl0Y0lrbTg
Just wanted to capture this -- not sure if I completely understand it.
It is possible to determine the fractal dimension of a 2-D projection of a complex system by counting the number of pixels (i.e., boxes of side epsilon) for ever-decreasing values of epsilon, and plotting the results on a log-log plot. The result should be a straight line and the slope is the fractal dimension of the system.