GRAYPLOT(2)

NAME
grayplot - 2D plot of a surface using gray levels

CALLING SEQUENCE
grayplot(x,y,z)

PARAMETERS

x,y : real vectors of size respectively (1,n1) and (1,n2).

z   : real matrix of size (n1,n2) (values of f)

DESCRIPTION
The surface is given by values z(i,j)=f(x(i),y(j)) on a grid defined by x,y. Each rectangle on the grid is filled with a gray level depending on the average value of f on the corners of the rectangle.

EXAMPLE
enter the command grayplot() to see a demo

AUTHOR
J.Ph.C..