overlay

Used to overlay one HLU plot object over a specific style of transformation.

Synopsis

function overlay ( base[1] : graphic, plot[1] : graphic )

Arguments

base

The bottom element of the overlay chain of plots. The object referenced must support overlays.

plot

Graphical object to be added to the top of the overlay.

Description

Overlay is used to draw one plot over one or more other plots. When a plot is added to an overlay, the new plot will be drawn on top of all of the plots currently in the overlay list. overlay calls the HLU function NhlAddOverlay. The return value of the overlay function is the reference to the annotation object created.

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$Revision: 1.6 $ $Date: 1995/07/26 23:33:26 $