The graphics displayed can be interactively manipulated.
On a Java enabled browser the following events are supported:
Mouse Down, Drag, Up
By pressing the mouse button and dragging it across the screen the scale
of the plot can be altered. With the release of the mouse button the
plot is redrawn using the new scale.
This can be used to zoom in on a section of
the plot. Data outside the plot is clipped.
By pressing R the plot is rescaled back to the default
scale of the data.
By pressing r the plot is repainted. This is useful when scrolling
the page as scrolling can effect the plot in odd ways.
This event will popup/hide (if visible) a window which will track
the position of the cursor across the plot.
The position is scaled to the axis of the plot. This feature used in
conjuction with the mouse dragging allows for greater control.
This event will popup a window that will display the closest data
point to the cursor. Repeated pressing of the key while moving the cursor
will display the closest data point to the cursor.
A black dot will be plotted over the data point to indicate which data
point has been found.
Use Keypress r to refresh the plot and erase the black dots.
This event will hide the closest data point window.
This event will popup a window that will allow the user to
enter from the keyboard the plot range. This can be used instead of
the mouse drag capability, and to increase the range of the plot.
This event caught in any of the popup windows will hide
that window. This allows the user to hide windows even if the
graph canvas itself is nolonger visible.