Creates a legend with
entries that refer to plots, or group values, or both legend items.
Often the data in a
plot is classified by a group variable. Or, multiple columns of data
are plotted in the same graph. These groups or columns are represented
in the graph by different color or line patterns or marker symbols.
In these cases, a DISCRETELEGEND can be added to the graph to help
decode the data. The DISCRETELEGEND statements uses the following
syntax:
DISCRETELEGEND
<..."graph-name-n"
| "legend-item-name-n" | "discrete-attribute-map-name-n">
The MERGEDLEGEND statement
can be used to consolidate legend entries when the graph displays
grouped data for two plots. The statement must specify exactly two
names that reference the source for the legend entry values:
MERGEDLEGEND
"graph-name"
| "legend-item-name"