Legend
By default, the contours are labeled with the actual contour level, using
three significant digits. If \-AXES is used, then no legend is allowed.
If the \LEGEND qualifier is used,
then the contours are labeled with an integer index and the list of indices
corresponding to the actual contour levels, the legend, is plotted along
the right side of the axes. If areas and/or volumes are requested, using
\AREAS and/or \VOLUMES, these values will also appear in the legend.
If you zoom in on a contour plot, by setting the axis scales beforehand,
and you use the \PARTIAL qualifier as well as the \AREAS qualifier,
then the areas will be percentages of the area currently showing on the
graph. By default, the areas are percentages of the total area.
To add more contours to a contour plot, re-issue the same contour command
with the \CONTINUE qualifier and
the legend will be continued from where it left off. You must have used the
\-RESET qualifier on the previous CONTOUR command if you intend to
use \CONTINUE on a succeeding CONTOUR command.
Legend size
The size of the legend characters is controlled with the
LEGENDSIZE
characteristic. The default value of %LEGENDSIZE = 3.
Axis relocation
The legend requires the right end of the x-axis to be set to
75% of the window, that is,
%XUPPERAXIS is set to 75.
By default, %XUPPERAXIS is reset to its former value after the
CONTOUR command is finished. If the \-RESET
qualifier is used, the axis location will not be reset.