1. A method comprising: representing an anatomical region on a display of a programming device, wherein the programming device is configured to communicate with an electrical stimulator coupled to an electrical stimulation lead; representing the electrical stimulation lead on the display; receiving, by the programming device, user input positioning a plurality of stimulation field representations at respective locations on the display; displaying the plurality of stimulation field representations on the display at the same time; and determining, by the programming device, a value of at least one stimulation parameter associated with stimulation therapy applied by the electrical stimulator via the lead based on the locations of the stimulation field representations relative to the representation of the anatomical region and the representation of the lead.