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3.14.5 parametric

When in parametric mode (`set parametric`) mathematical expressions must be given in pairs for `plot` and in triplets for `splot`.

Examples:

           plot sin(t),t**2
           splot cos(u)*cos(v),cos(u)*sin(v),sin(u)
     

Data files are plotted as before, except any preceding parametric function must be fully specified before a data file is given as a plot. In other words, the x parametric function (`sin(t)` above) and the y parametric function (`t**2` above) must not be interrupted with any modifiers or data functions; doing so will generate a syntax error stating that the parametric function is not fully specified.

Other modifiers, such as with and title, may be specified only after the parametric function has been completed:

           plot sin(t),t**2 title 'Parametric example' with linespoints
     

See also Parametric Mode Demos.