XYPlot

Selecting this button will set XGobi in a two-variable plotting mode.
This mode persists during scaling, brushing, identification or
line editing and is only changed by selecting DotPlot, Rotate or Tour.

A horizontal line is drawn in the variable circle corresponding to the
X variable plotted and a vertical line in that of the Y variable.  See
the help file for the variable selection panel for more information.

These plots can be cycled automatically:  see the help file for the
Cycle button in the XYPlot control panel.

This button can be activated from the keyboard by typing x or X.
