An example of the GUI that appears when 'datadisplay=True'.
The program loads 'ntime' sec of data from one spw and one field into memory, performs autoflagging on all baselines, and then displays the results. The user can step through baselines (it should respond quickly). Pressing 'next chunk' loads in the next chunk of data, processes it, and sends it to the display. This may take a few to several seconds depending on the seek-time in the dataset, and choice of algorithm parameters.