I'm not sure if this is digital art, this is my entry anyway.  You have to press enter to plot the graph and find the deriviative. I'm still running tests and improving it.  I would like to have the program draw a tangent line on the graph Sometimes it does not display the equation and I don't know why.

Here is my entry for the February digital art contest. I added .TXT to the KPL file to allow upload.  Rename it by removing the .TXT extension after you download it. The program creates a Lorenz butterfly which it then starts rotating in 3D space and the view zooms in and out. Run until bored. More on Lorenz butterfly can be found ...

Well here is a fun little date calculator, good for seeing how many years and days between then and now. The status line will also show total days. Enjoy, Norman Lucia