Many links on this site start dpgraph. To come back to the web page exit dpgraph. (Otherwise you will start accumulating lots of memory-hogging processes.)
If circles in dpgraph seem short and fat, it is probably because the taskbar is visible. Hide the taskbar. You may have to right-click on the taskbar to get to its properties and unlock it.
Here is the simplest possible DPGraph file, suitable for plotting z = f(x,y). Click on the Edit menu to change the function. If you want more control of the box size and other options, try this more complicated DPGraph file
To learn more about the features in DPGraph, open this tutorial. To use it, strip off one command at a time. (Click "Edit". Type Enter, select the last line and delete it. Then click Execute.) All of the defaults are defined, so this is a good place to see the features in DPGraph.
Note: Clicking on some links will automatically start up DPGraph. To get back to the web page, exit DPGraph.
Page on Splahes made by DPGraph and Mathematica
Page on Pencils of Curves
Page on the Quantum Mechanical Particle in a Box
Page on Soap Films
Page on the cycloid
(updated Nov. 28, 2006)
Page on the Donut Toy
Page on Spherical Harmonics
Page on Vibrating Drumheads
Heres what I call the
I use sin3(time) instead
of sin(time) so that the figure slows down near the kissing.
This looks nice with continuous rotation. (Type Alt A, C or click on Animate, Continuously rotate.)
Heres the movie
which is also found on the dpgraph
You can use the scrollbar to change the
gives the number of rotations of the color on any
circle centered at the origin. ( a should
be an integer to make the color continuous).
b changes the pitch of the spirals.
The speed of the animation is
(which can be negative, to move away from the spiral.)
Click here for the of dpgraphs I used in Calculus II. This page does not work properly with Netscape. Sorry.
Thanks to my son, Michael, for HTML tips.
Visit me often; more pages and graphs to appear!