1. A method for displaying graphical data, the method comprising: displaying a first graph of a first data set; receiving a first open drag command indicative of a first handle position on the first graph; positioning a first handle on the first graph based on a first close drag command based on the first open drag command; receiving a first positioning location signal based on the first close drag command; receiving a second open drag command indicative of a second handle position on the first graph; positioning a second handle on the first graph based on a second close drag command based on the second open drag command; receiving a second positioning location signal based on the positioning of the second handle; determining a second data set based on the first positioning location signal and second positioning location signal; and displaying a second graph of the second data set, wherein the first graph and second graph are concurrently displayed in a graph window.