contour

Contour plot of a 2D scalar field.

Syntax

[C, h] = contour(Z)
[C, h] = contour(Z, n)
[C, h] = contour(X, Y, Z, ...)

Description

Draws contour lines of Z over the (X, Y) grid. With n (integer), draws n automatically-chosen levels; with a vector of values, draws contours at those levels exactly.

Examples

[X, Y] = meshgrid(-2:0.1:2);
Z = X.*exp(-X.^2 - Y.^2);
contour(X, Y, Z, 20)

See also

• contourf — Filled contour plot.
• contour3 — 3D contour plot.
• contourslice — Contour slices through a 3D volume.
• mesh — 3D mesh (wireframe) plot.
• surf — 3D surface plot with colored faces.