MESHGRID MESHGRID Generate Grid Mesh For Plots

Usage

The meshgrid function generates arrays that can be used for the
generation of surface plots.  The syntax is one of 

  [X,Y] = meshgrid(x)
  [X,Y] = meshgrid(x,y)
  [X,Y,Z] = meshgrid(x,y,z)

where x,y,z are vectors, and X,Y,Z are matrices.  In the first
case [X,Y] = meshgrid(x), the rows of X and the columns of Y
contain copies of the vector x.  In the second case 
[X,Y] = meshgrid(x,y), the rows of X contain copies of x, and
the columns of Y contain copies of y.  In the third case, each
input is copied along the row, column or slice direction of the
corresponding output variable.