I have a set of data. First column is date (first of the month), second column is a yes/no on whether or not something was returned. Is there a way to plot this as a pie or circle chart and format so that all the "yes" values are one color and all the "no" values are another (without changing each slice of the pie)? What I envision is a circle chart, much like a clock, with the dates on the outside and the color red for a month when something is not returned and green for when it is. Thanks in advance.