Modeling Motion

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Modeling Motion Python Examples

This page serves as an index to the program code referred to in the computer science section of Modeling Motion. I will post individual programs and saved scripts of interactive sessions from the lectures.

Winter Quarter

Spring Quarter

Week 1

• driver.py A driver oscillator for the week 1 lab on resonanace.
• ca1d.py and ca.py - A 1-dimensional cellular automaton.

Week 2

• mass/spring examples - A system of masses and springs for the week 2 lab on mass-spring systems.
• predprey.py - The predator prey model from Callahan chapter 8.
• predpreyvec.py - A vector field graph of the predator prey system
• pendulum.py - A phase portrait of the undamped pendulum system.
• lorenz.py - The time and phase portraits of the famous Lorenz system showing it chaotic attractor.
• sensitivity.py - A time series plot of one variable, x, in the Lorenz system plotted twice with slightly different initial conditions showing how sensitive a chaotic system is to initial conditions.
• life.py - John Conway's famous 2-D CA called "The Game of Life".

Week 3

• field.py, charge.py - week3 computing lab solution on electric field visualization.

Week 4

• decoder.py and digital.py - Starting point for week 4 computing lab on digital logic.

Week 5

• processor files - files needed to run the MM1 processor simulator. Run "simulator.py" with the correct "*.mm1" file substituted in the definition of the program_file variable.
• surface.py - A program for visualizing functions of 2 variables by drawing a wireframe mesh.

Week 6

• Tkinter GUI examples - My examples plus links to documentation and other examples.

Week 7

• sinewave.py - Staring point for assignment due week 7.
• taylor - several versions of a program plotting taylor polynomial approximations to the sine function. taylor3.py responds to the arrow keys.
• tree - several versions of a recursive tree drawing program with some GUI controls.

Week 8

• power.py, and power2.py - POWER program from Callahan and a slightly modified one to graph both the function and its power spectrum.
• detector.py, and detector2.py - DETECTOR program from Callahan and modified version.
• powerspectrum.py - The program developed in class.
• signals.py, testsignals.py - A set of classes for signal processing and a test program for exercising them.
• bouncetk.py - The bouncing red ball with a slider added to control gravity—an example similar to the take home test question (hint,hint).

Week 9

• square.py,triangle.py, signals.py - Two examples summing up Fourier series to get non-sinusoidal periodic signals and the signals.py module they import.