Patent ID: 7458033

Claim:
A method of presenting time-dependent information, which comprises: displaying a first time scale, said first time scale comprising a plurality of first time units and a plurality of second time units, the second time units being subunits of said first time units; displaying numerical time-dependent information on a graph according to said first time scale wherein the graph provides the numerical time-dependent information as a function of time; providing for each of said first time units a graphical drill-up control; providing for each of said second time units a graphical drill-down control; in response to actuation of a drill-down control for one of said second time units, displaying a second time scale, said second time scale comprising one of the plurality of second time units and a plurality of third time units, said third time units being subunits of said second time units; and displaying said time-dependent information on the graph according to said second time scale.