--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/plot/ndgrid.m	Thu Jun 01 19:05:32 2006 +0000
@@ -0,0 +1,74 @@
+## Copyright (C) 2006, Alexander Barth
+##
+## This file is part of Octave.
+##
+## Octave is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
+##
+## Octave is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with Octave; see the file COPYING.  If not, write to the Free
+## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+## 02110-1301, USA.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {[@var{y1}, @var{y2}, ...,  @var{y}n]} = ndgrid (@var{x1}, @var{x2}, ..., @var{x}n)
+## @deftypefnx {Function File} {[@var{y1}, @var{y2}, ...,  @var{y}n]} = ndgrid (@var{x})
+## Given n vectors @var{x1}, ... @var{x}n, ndgrid returns n arrays of dimension n. 
+## The elements of the ith output argument contains the elements of the vector 
+## @var{x}i repeated over all dimensions different from the ith dimension.
+## Calling ndgrid with only one input argument @var{x} is equivalent of calling ndgrid with 
+## all n input arguments equal to @var{x}:
+##
+## [@var{y1}, @var{y2}, ...,  @var{y}n] = ndgrid (@var{x}, ..., @var{x})
+## @seealso{meshgrid}
+## @end deftypefn
+
+## Author: Alexander Barth <abarth@marine.usf.edu>
+
+function varargout = ndgrid(varargin)
+
+  if (nargin == 1)
+    n = max([nargout 2]);  
+    ## If only one input argument is given, repeat it n-times
+    varargin{1:n} = varargin{1};
+  elseif (nargin >= nargout)
+    n = max([nargin 2]);  
+  else
+    error ("ndgrid: wrong number of input arguments");
+  endif
+
+
+  ## Determine the size of the output arguments
+  
+  shape = zeros(1,n);
+
+  for i=1:n
+    if (~isvector(varargin{i}))
+      error ("ndgrid: arguments must be vectors");
+    endif
+
+    shape(i) = length(varargin{i});
+  endfor
+
+  for i=1:n
+    ## size for reshape
+    r = ones(1,n);
+    r(i) = shape(i);
+
+    ## size for repmat
+    s = shape;
+    s(i) = 1;
+
+    varargout{i} = repmat(reshape(varargin{i},r) ,s);
+  endfor
+
+
+
+endfunction