For the type of plot, you could have a 'contour' or 'heatmap' - technically, you can do a surface plot also (I think this is still experimental though). Boom. That's it.

I am looking for a graphing/plotting program that is capable of making a 3D and/or contour plots. I usually use xmgrace, but it cannot handle 3D plots. I have a file that contains a lot of x, y, z ...

Functions of Two Variables Functions of two variables can be visualized in many ways: heat maps in 2D, contour curves in 2D, wireframes in 3D, surfaces in 3D. We begin by defining a function of two ...