Syntax

Description

contourc calculates the contour matrix C used by contour, contour3, and contourf. The values in Z determine the heights of the contour lines with respect to a plane. The contour calculations use a regularly spaced grid determined by the dimensions of Z.

C = contourc(Z) computes the contour matrix from data in matrix Z, where Z must be at least a 2-by-2 matrix. The contours are isolines in the units of Z. The number of contour lines and the corresponding values of the contour lines are chosen automatically.

C = contourc(Z,n) computes contours of matrix Z with n contour levels.

C = contourc(Z,v) computes contours of matrix Z with contour lines at the values specified in vector v. The length of v determines the number of contour levels. To compute a single contour of level k, use contourc(Z,[k k]).

C = contourc(x,y,Z), C = contourc(x,y,Z,n), and C = contourc(x,y,Z,v) compute contours of Z using vectors x and y to determine the x and y values. x and y must be monotonically increasing.

See Also

clabel | contour | contour3 | contourf