CONTOUR command

Syntax: | `CONTOUR { x y } v nctr { min { incr }} CONTOUR\SPECIFIC { x y } v lvls`
Qualifiers: | `\SPECIFIC, \INTERPSIZE, \POLAR, \LEGEND, \COLOURS, \PARTIAL, \RESET, \BORDER, \AXES, \COORDINATES, \AREAS, \VOLUMES, \CONTINUE`
Defaults: | `x=[1;2;3;...], y=[1;2;3;...], \-SPECIFIC, \-INTERPSIZE, \-POLAR, \-LEGEND, \-COLOURS, \-RESET, \-AREAS, \-VOLUMES, \BORDER, \-COORDINATES, \AXES, \-CONTINUE`
Examples: | `CONTOUR X Y Z 10 CONTOUR M 10 MINVAL CONTOUR\SPECIFIC\INTERPSIZE 10 X Y M LEVELS`

The `CONTOUR` command draws contour lines for either data contained in a regular matrix or a scattered set of points contained in three vectors.

Contour level selection
Colours
Labels
Saving contour levels and coordinates
Legend
Polar coordinates
Axes
Scattered data
Matrix data
Example