Polar Scatter Plot

A conventional scatter plot can be difficult to interpret if there are many data sets that overlay eachother. This function draws a modified "polar" plot. The N data sets are assigned to a 360/N degree sector, and each point within a data set is plotted inside the appropriate sector. This is done by computing the point's polar coordinate, and mapping the resulting angle component on to the appropriate 360/N degree sector, while retaining the point's magnitude.