Contour - Lineout Plots

The contour plot is diplayed with a large cross hair cursor superimposed on it. The other plots shown are:

Upper left: The vertical lineout plot which shows the data along the vertical direction of the cross hair.
Lower right: The horizontal lineout plot which shows the data along the horizontal direction of the cross hair.

Initlially the crosshair is in the centre of the contour plot and controlled by the movement of the mouse. If the mouse is clicked, the crosshair is frozen in place and the toolbars and menu items are accessible.