This Matlab script & Simulink defines Lorenz Attractor as it well known by chaotic system, it can be used for a lot of applications like cryptography and many more.

• You can run either from a Matlab script Lorenz.m or from Simulink Lorenz.slx.
• To change parameters for Lorenz Attractor (rho, r and b) open fct5.m and modify them.
• To use Simulink you have to define parameters rho, r and b from command window or from workspace.
• Once simulation is done after running Lorenz.slx you'll get all state variables x, y and z; you can plot them together to see the phase portrait by the following command :

plot3(x, y, z);