The three dimensional graphic tools from MATLAB are also extremely useful and powerful.  Many of the 2D functions have their counterpart here and is usually called by appending a 3 to the end of the 2D function - for example (plot, plot3; quiver, quiver3 etc.).  Once again we will see only a useful subset of the graphing features.

There are typical three uses for 3D graphics

• line plots in 3 dimension
• plotting function of two variables - contour, mesh, surface
• using graphical objects and animation

Image processing is included in this chapter even through the image is a 2D.  The color distribution on the plane make it a pseudo 3D processing.