Plot a 2D matrix using a color plot

I have a 3D matrix where the i spans an angle , the j spans a value for a radius r and the k spans a set of times. The value in the entry is a positive number. What I would like to do is to plot, for each k, a 2D colored map of the matrix such that in the point of coordinates () it plots a color depending on the value of . In particular if I would like a specific color, say green, while the more approaches 0 I would like another color to be plotted, say blue, and red if becomes larger than 1.

Answer 1

[T.C.]

I found exactly what I needed. It's here: pcolor in polar coordinates - File Exchange - MATLAB Central (mathworks.com)