SparkeyG has asked for the wisdom of the Perl Monks concerning the following question:

While working with PGPlot, I've run into a problem with graphing my data. I have not been able to figure out how to change the labels of the X-Axis. I want to be able to graph data over a period of time, ie. Time of Day, Day of month.
Help, Obi-PM-Kenobi your my only hope.