MATLAB Function Reference Volume 1: A - E - Bad Request

2contourc
Purpose Low-level contour plot computation
Syntax C = contourc(Z)
C = contourc(Z,n)
C = contourc(Z,v)
C = contourc(x,y,Z)
C = contourc(x,y,Z,n)
C = contourc(x,y,Z,v)
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.
contourc
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 i, use contourc(Z,[i i]).
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-axis
limits. x and y must be monotonically increasing.
Remarks C is a two-row matrix specifying all the contour lines. Each contour line defined
in matrix C begins with a column that contains the value of the contour
(specified by v and used by clabel), and the number of (x,y) vertices in the
contour line. The remaining columns contain the data for the (x,y)pairs.
C = [value1 xdata(1) xdata(2)...value2 xdata(1) xdata(2)...;
dim1 ydata(1) ydata(2)...dim2 ydata(1) ydata(2)...]
Specifying irregularly spaced x and y vectors is not the same as contouring
irregularly spaced data. If x or y is irregularly spaced, contourc calculates
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