1. A method for displaying information in a multichannel oscilloscope, comprising: repeatedly sampling amplitudes of events over time; accumulating sampled data from the events into a persistence map that contains population information for amplitude and time combinations; determining a saturation and/or threshold population for the amplitude and time combinations; displaying information from the persistence map on a display device of the oscilloscope; and visually differentiating different population ranges that have been defined in response to the saturation and/or threshold population.