Manual

Buttons

• Reset: Sets the values of the parameters to those shown in the boxes and reinitializes the plot (e.g. resets the initial value to x0).
• Clear: Clears the plot, but does not reset the parameter values and maintains the current value of x .
• Start: Starts repeated time-stepping and plotting. Clear can be used while the evolution is proceeding if the display becomes scrambled.
• Stop: Stops the evolution and allows the parameters to be changed.

Text Boxes

Note that the parameter values are not updated until either Enter is hit on the keyboard or the Reset button is pushed. An entered value that is out of the allowed range is not accepted.

• a,b,c: Parameters of the Lorenz Equations
• dt: Time step for integrating equations
• x-axis, y-axis: Set the variables plotted on x and y axes: 0->t; 1->X(t); 2->Y(t); 3->Z(t).
• tran: Sets the number of dt time steps over which transients are eliminated and a phantom plot is drawn.
• X0, Y0, Z0: Initial values of the variables.
• dX0, dY0, dZ0: Changes in initial values for the second evolution to illustrate the sensitive dependence on initial conditions. (If tr an is nonzero, the perturbation is applied at the end of the transient.)

Scrollbar

• Speed: sets the iteration and animation speed, roughly in updates per second.