Cascade Chart Creator

On a cascade chart the X axis represents a variable like units quantity or volume. The Y axis represents a unit rate like profit per unit or a percentage. If one were to multiply the X axis value times the Y axis value one gets a meaningful value. For example, profit per unit times units gives you profit. Thus the area for a data point represents this value. If you plot profit per unit versus volume for your customers on a cascade chart then the shape of the data points rectangle indicates the profitability of a customer. A tall, positive box indicates a very profitable customer. A short box with a long base indicates a customer who you are shipping a lot of product to who gives you very little profit.