I like to have a 3D plot of a matrix on a Classpad 2. Lets assume that the matrix contains discrete sampling points. The both indices should by the x- and y- values. The matrix entries should be z-values.
I used the 3D Plot of the Classpad and entered:
v[int(x), int(y)]
Let's assume v is the name of the matrix.
This function definition does not work. The calculator is plotting nothing but it works in the main window.
As a next step I tried the same in the Graphics/Table window. Since it can just do 2D plots I set the variable y to a constant value. Now I'm getting an error message,
Interesting is that plotting works fine if I enter for x and y fixed values.
Is there anybody who knows how to plot an matrix?
Answered
