new file mode 100644
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+++ b/scripts/plot/__bars__.m
@@ -0,0 +1,59 @@
+## Copyright (C) 1996, 1997, 2007 John W. Eaton
+##
+## 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/>.
+
+## Undocumented internal function.
+
+## Author: jwe
+
+function tmp = __bars__ (h, vertical, x, y, xb, yb, width, group, have_color_spec, varargin)
+
+  ycols = columns (y);
+  clim = get (h, "clim");
+
+  if (vertical)
+    tmp = [];
+    for i = 1 : ycols
+      if (! have_color_spec)
+	if (ycols == 1)
+	  lev = clim (1);
+	else
+	  lev = (i - 1) * (clim(2) - clim(1)) / (ycols - 1) - clim(1);
+	endif
+	tmp = [tmp; patch(xb(:,:,i), yb(:,:,i), "FaceColor", "flat", 
+			  "cdata", lev, varargin {:})];
+      else
+	tmp = [tmp; patch(xb(:,:,i), yb(:,:,i), varargin {:})];
+      endif
+    endfor
+  else
+    tmp = [];
+    for i = 1 : ycols
+      if (! have_color_spec)
+	if (ycols == 1)
+	  lev = clim (1)
+	else
+	  lev = (i - 1) * (clim(2) - clim(1)) / (ycols - 1) - clim(1);
+	endif
+	tmp = [tmp; patch(yb(:,:,i), xb(:,:,i), "FaceColor", "flat", 
+			  "cdata", lev, varargin {:})];
+      else
+	tmp = [tmp; patch(yb(:,:,i), xb(:,:,i), varargin {:})];
+      endif
+    endfor
+  endif
+endfunction