NDGRID NDGRID Generate N-Dimensional Grid

Usage

Generates N-dimensional grids, each of which is constant in all but
one dimension.  The syntax for its use is either

   [y1, y2, ..., ym] = ndgrid(x1, x2, ..., xn)

where m <= n or 

   [y1, y2, ..., ym] = ndgrid(x1)

which is equivalent to the first form, with x1=x2=...=xn.  Each
output yi is an n-dimensional array, with values such that
ndgrid is useful for evaluating multivariate functionals over a
range of arguments.  It is a generalization of meshgrid, except
that meshgrid transposes the dimensions corresponding to the 
first two arguments to better fit graphical applications.