Visualizing Wavefunctions

I've started learning VTK, Python, and Tk in order to look into visualizing wavefunctions. So far, I've made an application that plots a function of x and y. The user can change the plotted function in an edit box. Get the 2D plotter here.

I've also got a prototype application that plots a function of 3 variables, and lets the user choose a slice (a plane) through the displayed volume, and the application plots the 2D slice in a view that looks very much like the 2D plotter. But it's not quite ready for public consumption yet.