contour_levels SciMax Toolbox contract

SciMax Toolbox >> contour_plot

contour_plot

Maxima Function

Calling Sequence

contour_plot (expr, x_range, y_range, options, ...)

Description

Plots the contours (curves of equal value) of expr over the region x_range by y_range. Any additional arguments are treated the same as in plot3d.

contour_plot only works when the plot format is gnuplot or gnuplot_pipes.

See also .

Examples:

(%i1) contour_plot (x^2 + y^2, [x, -4, 4], [y, -4, 4]);
(%o1)
(%i2) contour_plot (sin(y) * cos(x)^2, [x, -4, 4], [y, -4, 4]);
(%o2)
(%i3) F(x, y) := x^3 + y^2;
                                   3    2
(%o3)                  F(x, y) := x  + y
(%i4) contour_plot (F, [u, -4, 4], [v, -4, 4]);
(%o4)
(%i5) contour_plot (F, [u, -4, 4], [v, -4, 4], [gnuplot_preamble,
      "set size ratio -1"]);
(%o5)
(%i6) set_plot_option ([gnuplot_preamble,
                        "set cntrparam levels 12"])$
(%i7) contour_plot (F, [u, -4, 4], [v, -4, 4]);
contour_levels SciMax Toolbox contract