surf

Surface plot

Usages

surf(Z)

• Z is a matrix of real numbers, i.e., ndims(Z) == 2.
• Z(i,j) is the $z$-value of a bivariate function evaluated at the grid point [i,j].

surf(X, Y, Z)

• X and Y are real matrices of the same sizes, representing grid points at which the bivariate function is evaluated.
• The matrices X and Y can be obtained by meshgrid and ndgrid.
• Z is a real matrix of the same size as X and Y, representing $z$-values of the bivariate function evaluated at grid points.