I have a circular paper. I measure certain acoustic response on that paper. The measurement is taken by a stack of measuring instrument that move from one radial end to other radial end of the paper. So, I have the data in cartesian coordinates but I need to represent it in circular coordinates since the original material is circular in shape. And the plot needs to be a color map (like how pcolor does for cartesian plots). How do I make such color map in a circular plot?
I ave enclosed the X and Y axis values along with the corresponding measured data as TT in the attached excel file. They are in cartesian coordinate. I need to plot them as a color map such that it shows how the measured data is distributed over the circular paper.