eval3d

eval3d

eval3d — values of a function on a grid

Calling sequence

[z]=eval3d(fun,x,[y])

Parameters

`fun`	: function accepting vectors as arguments.
`x,y`	: 2 vectors of size (1,n1) and (1,n2). (default value for `y` : `y=x`).
`z`	: matrix of size (n1,n2).

Description

This function returns a matrix z(n1,n2). z(i,j)=fun(x(i),y(j)). If the function fun doesn't accept arguments of type vector use the primitive feval.

Examples



  x=-5:5;y=x;
  deff('[z]=f(x,y)',['z= x.*y']);
  z=eval3d(f,x,y);
  plot3d(x,y,z);
// 
  deff('[z]=f(x,y)',['z= x*y']);
  z=feval(x,y,f);
  plot3d(x,y,z);

See also

feval

Author

Steer S.; ; ;