I've data points for cylindrical coordinates that I need to plot as a contour plot in a circle. the plot is being generated as x-y plot .. I need it to be in cylindrical ordinate so 2D would be a disk or a circle .. is there anyway to generate this ?
I may have misunderstood your question, but have you tried this:
ContourPlot[x y, Element[{x, y}, Disk[]]]
Insect will overlay two plots/graphs but it won't actually fit the data inside the circle.
