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+## Copyright (C) 2007-2012 David Bateman
+##
+## 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 3 of the License, 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, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn  {Function File} {} scatter3 (@var{x}, @var{y}, @var{z}, @var{s}, @var{c})
+## @deftypefnx {Function File} {} scatter3 (@dots{}, 'filled')
+## @deftypefnx {Function File} {} scatter3 (@dots{}, @var{style})
+## @deftypefnx {Function File} {} scatter3 (@dots{}, @var{prop}, @var{val})
+## @deftypefnx {Function File} {} scatter3 (@var{h}, @dots{})
+## @deftypefnx {Function File} {@var{h} =} scatter3 (@dots{})
+##
+## Plot a scatter plot of the data in 3D@.  A marker is plotted at each point
+## defined by the points in the vectors @var{x}, @var{y} and @var{z}.  The size
+## of the markers used is determined by @var{s}, which can be a scalar or
+## a vector of the same length of @var{x}, @var{y} and @var{z}.  If @var{s} is
+## not given or is an empty matrix, then the default value of 8 points is used.
+##
+## The color of the markers is determined by @var{c}, which can be a string
+## defining a fixed color; a 3-element vector giving the red, green, and blue
+## components of the color; a vector of the same length as @var{x} that gives
+## a scaled index into the current colormap; or a @var{n}-by-3 matrix defining
+## the colors of each of the markers individually.
+##
+## The marker to use can be changed with the @var{style} argument, that is a
+## string defining a marker in the same manner as the @code{plot} command.
+## If the argument 'filled' is given then the markers as filled.  All
+## additional arguments are passed to the underlying patch command.
+##
+## The optional return value @var{h} is a graphics handle to the hggroup
+## object representing the points.
+##
+## @example
+## @group
+## [x, y, z] = peaks (20);
+## scatter3 (x(:), y(:), z(:), [], z(:));
+## @end group
+## @end example
+##
+## @seealso{plot, patch, scatter}
+## @end deftypefn
+
+function retval = scatter3 (varargin)
+
+  [h, varargin, nargin] = __plt_get_axis_arg__ ("scatter3", varargin{:});
+
+  if (nargin < 2)
+    print_usage ();
+  else
+    oldh = gca ();
+    unwind_protect
+      axes (h);
+      newplot ();
+      tmp = __scatter__ (h, 3, "scatter3", varargin{:});
+    unwind_protect_cleanup
+      axes (oldh);
+    end_unwind_protect
+  endif
+
+  if (! ishold ())
+    set (h, "view", [-37.5, 30],
+         "xgrid", "on", "ygrid", "on", "zgrid", "on");
+  endif
+
+  if (nargout > 0)
+    retval = tmp;
+  endif
+
+endfunction
+
+
+%!demo
+%! clf
+%! [x, y, z] = peaks (20);
+%! scatter3 (x(:), y(:), z(:), [], z(:));
+
+%!demo
+%! clf
+%! x = rand (20,1);
+%! y = rand (20,1);
+%! z = rand (20,1);
+%! scatter3 (x(:), y(:), z(:), 10, z(:), "s");
+
+%!demo
+%! clf
+%! x = rand (20,1);
+%! y = rand (20,1);
+%! z = rand (20,1);
+%! scatter3 (x(:), y(:), z(:), 20*z(:), z(:), "s");
+
+%!demo
+%! clf
+%! x = rand (20,1);
+%! y = rand (20,1);
+%! z = rand (20,1);
+%! scatter3 (x(:), y(:), z(:), 20*z(:), [], "s");
+