# HG changeset patch
# User John W. Eaton <jwe@octave.org>
# Date 1259701183 18000
# Node ID 1aeb39118764056f7817a9592375c3bb72b27a80
# Parent  5a4f8d52bb0e0824459209713d0887d1884bda94
convert some plot functions to subfunctions or make some them private

diff --git a/scripts/ChangeLog b/scripts/ChangeLog
--- a/scripts/ChangeLog
+++ b/scripts/ChangeLog
@@ -1,3 +1,40 @@
+2009-12-01  John W. Eaton  <jwe@octave.org>
+
+	* plot/private/__axes_limits__.m:
+	* plot/private/__axis_label__.m:
+	* plot/private/__bar__.m:
+	* plot/private/__clabel__.m:
+	* plot/private/__contour__.m:
+	* plot/private/__errcomm__.m:
+	* plot/private/__errplot__.m:
+	* plot/private/__ezplot__.m:
+	* plot/private/__line__.m:
+	* plot/private/__patch__.m:
+	* plot/private/__plt__.m:
+	* plot/private/__pltopt__.m:
+	* plot/private/__quiver__.m: Rename from plot/__quiver__.m
+	* plot/private/__scatter__.m:
+	* plot/private/__stem__.m:
+	* plot/private/__interp_cube__.m:
+	* plot/private/__add_datasource__.m:
+	* plot/private/__actual_axis_position__.m
+	* plot/private/__default_plot_options__.m
+
+	* plot/__pltopt1__.m: Now a subfunction of plot/__pltopt__.m.
+
+	* plot/__bars__.m: Now a subfunction of plot/__bar__.m.
+	* plot/__bar__.m (bars): Rename from __bars__.
+	(__bar__): Call bars insteaad of __bars__.
+
+	* plot/__area__.m: Now a subfunction of plot/area.m.
+
+	* plot/__plr1__.m, plot/__plr2__.m: Now subfunctions of polar.m.
+
+	* plot/__plt1__.m, plot/__plt2__.m, plot/__plt2mm__.m,
+	plot/__plt2mv__.m, plot/__plt2ss__.m, plot/__plt2sv__.m,
+	plot/__plt2vm__.m, plot/__plt2vs__.m, plot/__plt2vv__.m:
+	Now subfunctions of __plt__.m.
+
 2009-11-30  John W. Eaton  <jwe@octave.org>
 
 	* mkdoc: Handle classes in function names.
diff --git a/scripts/plot/__area__.m b/scripts/plot/__area__.m
deleted file mode 100644
--- a/scripts/plot/__area__.m
+++ /dev/null
@@ -1,127 +0,0 @@
-## Copyright (C) 2007, 2008, 2009 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} {} __area__ (@var{ax}, @var{x}, @var{y}, @var{bv}, @dots{})
-## Undocumented internal function.
-## @end deftypefn
-
-function retval = __area__ (ax, x, y, bv, varargin)
-
-  y0 = bv * ones (1, rows (y));
-  y0 = zeros (1, rows (y));
-  retval = [];
-  for i = 1: size (y, 2);
-    hg = hggroup ();
-    retval = [retval; hg];
-    args = __add_datasource__ ("area", hg, {"x", "y"}, varargin{:});
-
-    x1 = x(:, 1).';
-    y1 = y (:, i).';
-    addproperty ("xdata", hg, "data", x1);
-    addproperty ("ydata", hg, "data", y1);
-
-    addlistener (hg, "xdata", @update_data);
-    addlistener (hg, "ydata", @update_data);
-
-    if (i == 1)
-      h = patch (ax, [x1(1), x1, fliplr(x1)], [bv, y1, bv*ones(1, length(y1))],
-		 __next_line_color__ (), "parent", hg);
-    else
-      y1 = y0 + y1;
-      h = patch (ax, [x1(1), x1, fliplr(x1)], [y0(1), y1, fliplr(y0)],
-		 __next_line_color__ (), "parent", hg);
-    endif
-
-    y0 = y1;
-
-    addproperty ("basevalue", hg, "data", bv);
-    addlistener (hg, "basevalue", @move_baseline); 
-
-    addproperty ("edgecolor", hg, "patchedgecolor", get (h, "edgecolor"));
-    addproperty ("linewidth", hg, "patchlinewidth", get (h, "linewidth"));
-    addproperty ("linestyle", hg, "patchlinestyle", get (h, "linestyle"));
-    addproperty ("facecolor", hg, "patchfacecolor", get (h, "facecolor"));
-
-    addlistener (hg, "edgecolor", @update_props);
-    addlistener (hg, "linewidth", @update_props); 
-    addlistener (hg, "linestyle", @update_props); 
-    addlistener (hg, "facecolor", @update_props); 
-
-    addproperty ("areagroup", hg, "data");
-    set (retval, "areagroup", retval);
-
-    if (! isempty (args))
-      set (hg, args{:});
-    endif
-  endfor
-
-endfunction
-
-function update_props (h, d)
-  kids = get (h, "children");
-  set (kids, "edgecolor", get (h, "edgecolor"), 
-       "linewidth", get (h, "linewidth"),
-       "linestyle", get (h, "linestyle"),
-       "facecolor", get (h, "facecolor"));
-endfunction
-
-function move_baseline (h, d)
-  persistent recursion = false;
-
-  ## Don't allow recursion
-  if (! recursion)
-    unwind_protect
-      recursion = true;
-      hlist = get (h, "areagroup");
-      b0 = get (h, "basevalue");
-
-      for hh = hlist(:)'
-	if (hh != h)
-	  b1 = get (hh, "basevalue");
-	  if (b1 != b0)
-	    set (hh, "basevalue", b0);
-	  endif
-	endif
-      endfor
-      update_data (h, d);
-    unwind_protect_cleanup
-      recursion = false;
-    end_unwind_protect
-  endif
-endfunction
-
-function update_data (h, d)
-  hlist = get (h, "areagroup");
-  bv = get (h, "basevalue");
-  for i = 1 : length (hlist)
-    hh = hlist(i);
-    x1 = get (hh, "xdata")(:);
-    y1 = get (hh, "ydata")(:);
-
-    set (get (hh, "children"), "xdata", [x1(1); x1; flipud(x1)]);
-    if (i == 1)
-      set (get (hh, "children"), "ydata", [bv; y1; bv*ones(length(y1), 1)]);
-    else
-      y1 = y0 + y1;
-      set (get (hh, "children"), "ydata", [y0(1); y1; flipud(y0)]);
-    endif      
-
-    y0 = y1;
-  endfor
-endfunction
diff --git a/scripts/plot/__bars__.m b/scripts/plot/__bars__.m
deleted file mode 100644
--- a/scripts/plot/__bars__.m
+++ /dev/null
@@ -1,274 +0,0 @@
-## Copyright (C) 1996, 1997, 2007, 2008, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __bars__ (@var{ax}, @var{vertical}, @var{x}, @var{y}, @var{xb}, @var{yb}, @var{width}, @var{group}, @var{have_color_spec}, @var{base_value}, @dots{})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function tmp = __bars__ (ax, vertical, x, y, xb, yb, width, group, have_color_spec, base_value, varargin)
-
-  ycols = columns (y);
-  clim = get (ax, "clim");
-  tmp = [];
-
-  for i = 1:ycols
-    hg = hggroup ();
-    tmp = [tmp; hg];
-    args = __add_datasource__ ("bar", hg, {"x", "y"}, varargin{:});
-    
-    if (vertical)
-      if (! have_color_spec)
-	if (ycols == 1)
-	  lev = clim(1);
-	else
-	  lev = (i - 1) * (clim(2) - clim(1)) / (ycols - 1) - clim(1);
-	endif
-	h = patch(xb(:,:,i), yb(:,:,i), "FaceColor", "flat", 
-		  "cdata", lev, "parent", hg);
-      else
-	h = patch(xb(:,:,i), yb(:,:,i), "parent", hg);
-      endif
-    else
-      if (! have_color_spec)
-	if (ycols == 1)
-	  lev = clim(1)
-	else
-	  lev = (i - 1) * (clim(2) - clim(1)) / (ycols - 1) - clim(1);
-	endif
-	h = patch(yb(:,:,i), xb(:,:,i), "FaceColor", "flat", 
-		  "cdata", lev, "parent", hg);
-      else
-	h = patch(yb(:,:,i), xb(:,:,i), "parent", hg);
-      endif
-    endif
-
-    if (i == 1)
-      x_axis_range = get (ax, "xlim");
-      h_baseline = line (x_axis_range, [0, 0], "color", [0, 0, 0]);
-      set (h_baseline, "handlevisibility", "off");
-      set (h_baseline, "xliminclude", "off");
-      addlistener (ax, "xlim", @update_xlim);
-      addlistener (h_baseline, "ydata", @update_baseline);
-      addlistener (h_baseline, "visible", @update_baseline);
-    endif
-
-    ## Setup the hggroup and listeners
-    addproperty ("showbaseline", hg, "radio", "{on}|off");
-    addproperty ("basevalue", hg, "data", base_value);
-    addproperty ("baseline", hg, "data", h_baseline);
-
-    addlistener (hg, "showbaseline", @show_baseline);
-    addlistener (hg, "basevalue", @move_baseline); 
-
-    addproperty ("barwidth", hg, "data", width);
-    if (group)
-      addproperty ("barlayout", hg, "radio", "stacked|{grouped}", "grouped");
-    else
-      addproperty ("barlayout", hg, "radio", "{stacked}|grouped", "stacked");
-    endif
-    if (vertical)
-      addproperty ("horizontal", hg, "radio", "on|{off}", "off")
-    else
-      addproperty ("horizontal", hg, "radio", "{on}|off", "on")
-    endif
-
-    addlistener (hg, "barwidth", @update_group);
-    addlistener (hg, "barlayout", @update_group);
-    addlistener (hg, "horizontal", @update_group);
-
-    addproperty ("edgecolor", hg, "patchedgecolor", get (h, "edgecolor"));
-    addproperty ("linewidth", hg, "patchlinewidth", get (h, "linewidth"));
-    addproperty ("linestyle", hg, "patchlinestyle", get (h, "linestyle"));
-    addproperty ("facecolor", hg, "patchfacecolor", get (h, "facecolor"));
-
-    addlistener (hg, "edgecolor", @update_props);
-    addlistener (hg, "linewidth", @update_props); 
-    addlistener (hg, "linestyle", @update_props); 
-    addlistener (hg, "facecolor", @update_props); 
-
-    if (isvector (x))
-      addproperty ("xdata", hg, "data", x);
-    else
-      addproperty ("xdata", hg, "data", x(:, i));
-    endif
-    addproperty ("ydata", hg, "data", y(:, i));
- 
-    addlistener (hg, "xdata", @update_data);
-    addlistener (hg, "ydata", @update_data);
-
-    addproperty ("bargroup", hg, "data");
-    set (tmp, "bargroup", tmp);
-    if (! isempty (args))
-      set (hg, args{:});
-    endif
-    if (i == 1)
-      set (h_baseline, "parent", get (hg, "parent"));
-    endif
-  endfor
-
-  update_xlim (ax, []);
-endfunction
-
-function update_xlim (h, d)
-  kids = get (h, "children");
-  xlim = get (h, "xlim");
-
-  for i = 1 : length (kids)
-    obj = get (kids (i));
-    if (strcmp (obj.type, "hggroup") && isfield (obj, "baseline"))
-      if (any (get (obj.baseline, "xdata") != xlim))
-	set (obj.baseline, "xdata", xlim);
-      endif
-    endif
-  endfor
-endfunction
-
-function update_baseline (h, d)
-  visible = get (h, "visible");
-  ydata = get (h, "ydata")(1);
-
-  kids = get (get (h, "parent"), "children");
-  for i = 1 : length (kids)
-    obj = get (kids (i));
-    if (strcmp (obj.type, "hggroup") && isfield (obj, "baseline") 
-	&& obj.baseline == h)
-      ## Only alter if changed to avoid recursion of the listener functions
-      if (! strcmpi (get (kids(i), "showbaseline"), visible))
-	set (kids (i), "showbaseline", visible);
-      endif
-      if (! strcmpi (get (kids(i), "basevalue"), visible))
-	set (kids (i), "basevalue", ydata);
-      endif
-    endif
-  endfor
-endfunction
-
-function show_baseline (h, d)
-  persistent recursion = false;
-
-  ## Don't allow recursion
-  if (! recursion)
-    unwind_protect
-      recursion = true;
-      hlist = get (h, "bargroup");
-      showbaseline = get (h, "showbaseline");
-      for hh = hlist(:)'
-	if (hh != h)
-	  set (hh, "showbaseline", showbaseline);
-	endif
-      endfor
-      set (get (h, "baseline"), "visible", showbaseline);
-    unwind_protect_cleanup
-      recursion = false;
-    end_unwind_protect
-  endif
-endfunction
-
-function move_baseline (h, d)
-  b0 = get (h, "basevalue");
-  bl = get (h, "baseline");
-
-  if (get (bl, "ydata") != [b0, b0])
-    set (bl, "ydata", [b0, b0]);
-  endif
-
-  if (strcmpi (get (h, "barlayout"), "grouped"))
-    update_data (h, d);
-  endif
-endfunction
-
-function update_props (h, d)
-  kids = get (h, "children");
-  set (kids, "edgecolor", get (h, "edgecolor"), 
-       "linewidth", get (h, "linewidth"),
-       "linestyle", get (h, "linestyle"),
-       "facecolor", get (h, "facecolor"));
-endfunction
-
-function update_data (h, d)
-  persistent recursion = false;
-
-  ## Don't allow recursion
-  if (! recursion)
-    unwind_protect
-      recursion = true;
-      hlist = get (h, "bargroup");
-      x = get (h, "xdata");
-      if (!isvector (x))
-	x = x(:);
-      endif
-      y = [];
-      for hh = hlist(:)'
-	ytmp = get (hh, "ydata");
-	y = [y ytmp(:)];
-      endfor
-
-      [xb, yb] = bar (x, y, get (h, "barwidth"), get (h, "barlayout"),
-		      "basevalue", get (h, "basevalue"));
-      ny = columns (y);
-      vert = strcmpi (get (h, "horizontal"), "off");
-
-      for i = 1:ny
-	hp = get (hlist(i), "children");
-	if (vert)
-	  set (hp, "xdata", xb(:,:,i), "ydata", yb(:,:,i));
-	else
-	  set (hp, "xdata", yb(:,:,i), "ydata", xb(:,:,i));
-	endif
-      endfor
-    unwind_protect_cleanup
-      recursion = false;
-    end_unwind_protect
-  endif
-endfunction
-
-function update_group (h, d)
-  persistent recursion = false;
-
-  ## Don't allow recursion
-  if (! recursion)
-    unwind_protect
-      recursion = true;
-      hlist = get (h, "bargroup");
-      barwidth = get(h, "barwidth");
-      barlayout = get (h, "barlayout");
-      horizontal = get (h, "horizontal");
-
-      ## To prevent recursion, only change if modified
-      for hh = hlist(:)'
-	if (hh != h)
-	  if (get (hh, "barwidth") != barwidth)
-	    set (hh, "barwidth", barwidth);
-	  endif
-	  if (! strcmpi (get (hh, "barlayout"), barlayout))
-	    set (hh, "barlayout", barlayout);
-	  endif
-	  if (! strcmpi (get (hh, "horizontal"), horizontal))
-	    set (hh, "horizontal", horizontal);
-	  endif
-	endif
-      endfor
-      update_data (h, d);
-    unwind_protect_cleanup
-      recursion = false;
-    end_unwind_protect
-  endif
-endfunction
diff --git a/scripts/plot/__plr1__.m b/scripts/plot/__plr1__.m
deleted file mode 100644
--- a/scripts/plot/__plr1__.m
+++ /dev/null
@@ -1,51 +0,0 @@
-## Copyright (C) 1994, 1995, 1996, 1997, 2000, 2005, 2006, 2007, 2009
-##               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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plr1__ (@var{h}, @var{theta}, @var{fmt})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plr1__ (h, theta, fmt)
-
-  if (nargin != 3)
-    print_usage ();
-  endif
-
-  [nr, nc] = size (theta);
-  if (nr == 1)
-    theta = theta';
-    tmp = nr;
-    nr = nc;
-    nc = tmp;
-  endif
-  theta_i = imag (theta);
-  if (any (theta_i))
-    rho = theta_i;
-    theta = real (theta);
-  else
-    rho = theta;
-    theta = (1:nr)';
-  endif
-
-  retval = __plr2__ (h, theta, rho, fmt);
-
-endfunction
diff --git a/scripts/plot/__plr2__.m b/scripts/plot/__plr2__.m
deleted file mode 100644
--- a/scripts/plot/__plr2__.m
+++ /dev/null
@@ -1,124 +0,0 @@
-## Copyright (C) 1994, 1995, 1996, 1997, 1999, 2000, 2002, 2005, 2006,
-##               2007, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plr2__ (@var{h}, @var{theta}, @var{rho}, @var{fmt})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plr2__ (h, theta, rho, fmt)
-
-  if (nargin != 4)
-    print_usage ();
-  endif
-
-  if (any (imag (theta)))
-    theta = real (theta);
-  endif
-
-  if (any (imag (rho)))
-    rho = real (rho);
-  endif
-
-  if (isscalar (theta))
-    if (isscalar (rho))
-      x = rho * cos (theta);
-      y = rho * sin (theta);
-      retval = __plt__ ("polar", h, x, y, fmt);
-    else
-      error ("__plr2__: invalid data for plotting");
-    endif
-  elseif (isvector (theta))
-    if (isvector (rho))
-      if (length (theta) != length (rho))
-        error ("__plr2__: vector lengths must match");
-      endif
-      if (rows (rho) == 1)
-        rho = rho';
-      endif
-      if (rows (theta) == 1)
-        theta = theta';
-      endif
-      x = rho .* cos (theta);
-      y = rho .* sin (theta);
-      retval = __plt__ ("polar", h, x, y, fmt);
-    elseif (ismatrix (rho))
-      [t_nr, t_nc] = size (theta);
-      if (t_nr == 1)
-        theta = theta';
-        tmp = t_nr;
-        t_nr = t_nc;
-        t_nc = tmp;
-      endif
-      [r_nr, r_nc] = size (rho);
-      if (t_nr != r_nr)
-        rho = rho';
-        tmp = r_nr;
-        r_nr = r_nc;
-        r_nc = tmp;
-      endif
-      if (t_nr != r_nr)
-        error ("__plr2__: vector and matrix sizes must match");
-      endif
-      x = diag (cos (theta)) * rho;
-      y = diag (sin (theta)) * rho;
-      retval = __plt__ ("polar", h, x, y, fmt);
-    else
-      error ("__plr2__: invalid data for plotting");
-    endif
-  elseif (ismatrix (theta))
-    if (isvector (rho))
-      [r_nr, r_nc] = size (rho);
-      if (r_nr == 1)
-        rho = rho';
-        tmp = r_nr;
-        r_nr = r_nc;
-        r_nc = tmp;
-      endif
-      [t_nr, t_nc] = size (theta);
-      if (r_nr != t_nr)
-        theta = theta';
-        tmp = t_nr;
-        t_nr = t_nc;
-        t_nc = tmp;
-      endif
-      if (r_nr != t_nr)
-        error ("__plr2__: vector and matrix sizes must match");
-      endif
-      diag_r = diag (rho);
-      x = diag_r * cos (theta);
-      y = diag_r * sin (theta);
-      retval = __plt__ ("polar", h, x, y, fmt);
-    elseif (ismatrix (rho))
-      if (! size_equal (rho, theta))
-        error ("__plr2__: matrix dimensions must match");
-      endif
-      x = rho .* cos (theta);
-      y = rho .* sin (theta);
-      retval = __plt__ ("polar", h, x, y, fmt);
-    else
-      error ("__plr2__: invalid data for plotting");
-    endif
-  else
-    error ("__plr2__: invalid data for plotting");
-  endif
-
-endfunction
diff --git a/scripts/plot/__plt1__.m b/scripts/plot/__plt1__.m
deleted file mode 100644
--- a/scripts/plot/__plt1__.m
+++ /dev/null
@@ -1,63 +0,0 @@
-## Copyright (C) 1994, 1995, 1996, 1997, 2000, 2005, 2006, 2007, 2009
-##               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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plt1__ (@var{h}, @var{x1}, @var{options}, @var{properties})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plt1__ (h, x1, options, properties)
-
-  if (nargin < 2 || nargin > 4)
-    print_usage ();
-  endif
-
-  if (nargin < 3 || isempty (options))
-    options = __default_plot_options__ ();
-  endif
-
-  if (nargin < 4)
-    properties = {};
-  endif
-
-  if (! isstruct (options))
-    error ("__plt1__: options must be a struct array");
-  endif
-
-  [nr, nc] = size (x1);
-  if (nr == 1)
-    x1 = x1.';
-    tmp = nr;
-    nr = nc;
-    nc = tmp;
-  endif
-  x1_i = imag (x1);
-  if (any (any (x1_i)))
-    x2 = x1_i;
-    x1 = real (x1);
-  else
-    x2 = x1;
-    x1 = (1:nr)';
-  endif
-
-  retval = __plt2__ (h, x1, x2, options, properties);
-
-endfunction
diff --git a/scripts/plot/__plt2__.m b/scripts/plot/__plt2__.m
deleted file mode 100644
--- a/scripts/plot/__plt2__.m
+++ /dev/null
@@ -1,86 +0,0 @@
-## Copyright (C) 1994, 1995, 1996, 1997, 2000, 2002, 2005, 2006, 2007,
-##               2008, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plt2__ (@var{h}, @var{x1}, @var{x2}, @var{options}, @var{properties})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plt2__ (h, x1, x2, options, properties)
-
-  if (nargin < 3 || nargin > 5)
-    print_usage ();
-  endif
-
-  if (nargin < 4 || isempty (options))
-    options = __default_plot_options__ ();
-  endif
-
-  if (nargin < 5)
-    properties = {};
-  endif
-
-  if (! isstruct (options))
-    error ("__plt1__: options must be a struct array");
-  endif
-
-  if (any (any (imag (x1))))
-    x1 = real (x1);
-  endif
-
-  if (any (any (imag (x2))))
-    x2 = real (x2);
-  endif
-
-  h_set = false;
-  if (isempty (x1) && isempty (x2))
-    retval = zeros (0, 1);
-  elseif (isscalar (x1))
-    if (isscalar (x2))
-      retval = __plt2ss__ (h, x1, x2, options, properties);
-    elseif (isvector (x2))
-      retval = __plt2sv__ (h, x1, x2, options, properties);
-    else
-      error ("__plt2__: invalid data for plotting");
-    endif
-  elseif (isvector (x1))
-    if (isscalar (x2))
-      retval = __plt2vs__ (h, x1, x2, options, properties);
-    elseif (isvector (x2))
-      retval = __plt2vv__ (h, x1, x2, options, properties);
-    elseif (ismatrix (x2))
-      retval = __plt2vm__ (h, x1, x2, options, properties);
-    else
-      error ("__plt2__: invalid data for plotting");
-    endif
-  elseif (ismatrix (x1))
-    if (isvector (x2))
-      retval = __plt2mv__ (h, x1, x2, options, properties);
-    elseif (ismatrix (x2))
-      retval = __plt2mm__ (h, x1, x2, options, properties);
-    else
-      error ("__plt2__: invalid data for plotting");
-    endif
-  else
-    error ("__plt2__: invalid data for plotting");
-  endif
-
-endfunction
diff --git a/scripts/plot/__plt2mm__.m b/scripts/plot/__plt2mm__.m
deleted file mode 100644
--- a/scripts/plot/__plt2mm__.m
+++ /dev/null
@@ -1,72 +0,0 @@
-## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2003, 2005,
-##               2006, 2007, 2008, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plt2mm__ (@var{h}, @var{x}, @var{y}, @var{options}, @var{properties})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plt2mm__ (h, x, y, options, properties)
-
-  if (nargin < 3 || nargin > 5)
-    print_usage ();
-  endif
-
-  if (nargin < 4 || isempty (options))
-    options = __default_plot_options__ ();
-  endif
-
-  if (nargin < 5)
-    properties = {};
-  endif
-
-  [x_nr, x_nc] = size (x);
-  [y_nr, y_nc] = size (y);
-
-  k = 1;
-  if (x_nr == y_nr && x_nc == y_nc)
-    if (x_nc > 0)
-      if (numel (options) == 1)
-	options = repmat (options(:), x_nc, 1);
-      endif
-      retval = zeros (x_nc, 1);
-      for i = 1:x_nc
-	tkey = options(i).key;
-	if (! isempty (tkey))
-	  set (h, "key", "on");
-	endif
-	color = options(i).color;
-	if (isempty (color))
-	  color = __next_line_color__ ();
-	endif
-
-	retval(i) = line (x(:,i), y(:,i), "keylabel", tkey, "color", color,
-			  "linestyle", options(i).linestyle,
-			  "marker", options(i).marker, properties{:});
-      endfor
-    else
-      error ("__plt2mm__: arguments must be a matrices");
-    endif
-  else
-    error ("__plt2mm__: matrix dimensions must match");
-  endif
-
-endfunction
diff --git a/scripts/plot/__plt2mv__.m b/scripts/plot/__plt2mv__.m
deleted file mode 100644
--- a/scripts/plot/__plt2mv__.m
+++ /dev/null
@@ -1,85 +0,0 @@
-## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2003, 2005,
-##               2006, 2007, 2008, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plt2mv__ (@var{h}, @var{x}, @var{y}, @var{options}, @var{properties})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plt2mv__ (h, x, y, options, properties)
-
-  if (nargin < 3 || nargin > 5)
-    print_usage ();
-  endif
-
-  if (nargin < 4 || isempty (options))
-    options = __default_plot_options__ ();
-  endif
-
-  if (nargin < 5)
-    properties = {};
-  endif
-
-  [x_nr, x_nc] = size (x);
-  [y_nr, y_nc] = size (y);
-
-  if (y_nr == 1)
-    y = y';
-    tmp = y_nr;
-    y_nr = y_nc;
-    y_nc = tmp;
-  endif
-
-  if (x_nr == y_nr)
-    1;
-  elseif (x_nc == y_nr)
-    x = x';
-    tmp = x_nr;
-    x_nr = x_nc;
-    x_nc = tmp;
-  else
-    error ("__plt2mv__: matrix dimensions must match");
-  endif
-
-  if (x_nc > 0)
-    if (numel (options) == 1)
-      options = repmat (options(:), x_nc, 1);
-    endif
-    retval = zeros (x_nc, 1);
-    for i = 1:x_nc
-      tkey = options(i).key;
-      if (! isempty (tkey))
-	set (h, "key", "on");
-      endif
-      color = options(i).color;
-      if (isempty (color))
-	color = __next_line_color__ ();
-      endif
-
-      retval(i) = line (x(:,i), y, "keylabel", tkey, "color", color,
-			"linestyle", options(i).linestyle,
-			"marker", options(i).marker, properties{:});
-    endfor
-  else
-    error ("__plt2mv__: arguments must be a matrices");
-  endif
-
-endfunction
diff --git a/scripts/plot/__plt2ss__.m b/scripts/plot/__plt2ss__.m
deleted file mode 100644
--- a/scripts/plot/__plt2ss__.m
+++ /dev/null
@@ -1,65 +0,0 @@
-## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2003, 2005,
-##               2006, 2007, 2008, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plt2ss__ (@var{h}, @var{x}, @var{y}, @var{options}, @var{properties})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plt2ss__ (h, x, y, options, properties)
-
-  if (nargin < 3 || nargin > 5)
-    print_usage ();
-  endif
-
-  if (nargin < 4 || isempty (options))
-    options = __default_plot_options__ ();
-  endif
-
-  if (nargin < 5)
-    properties = {};
-  endif
-
-  if (numel (options) > 1)
-    options = options(1);
-  endif
-
-  [x_nr, x_nc] = size (x);
-  [y_nr, y_nc] = size (y);
-
-  if (x_nr == 1 && x_nr == y_nr && x_nc == 1 && x_nc == y_nc)
-    key = options.key;
-    if (! isempty (key))
-      set (h, "key", "on");
-    endif
-    color = options.color;
-    if (isempty (color))
-      color = __next_line_color__ ();
-    endif
-
-    retval = line (x, y, "keylabel", key, "color", color,
-		   "linestyle", options.linestyle,
-		   "marker", options.marker, properties{:});
-  else
-    error ("__plt2ss__: arguments must be scalars");
-  endif
-
-endfunction
diff --git a/scripts/plot/__plt2sv__.m b/scripts/plot/__plt2sv__.m
deleted file mode 100644
--- a/scripts/plot/__plt2sv__.m
+++ /dev/null
@@ -1,65 +0,0 @@
-## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2003, 2005,
-##               2006, 2007, 2008, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plt2sv__ (@var{h}, @var{x}, @var{y}, @var{options}, @var{properties})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plt2sv__ (h, x, y, options, properties)
-
-  if (nargin < 3 || nargin > 5)
-    print_usage ();
-  endif
-
-  if (nargin < 4 || isempty (options))
-    options = __default_plot_options__ ();
-  endif
-
-  if (nargin < 5)
-    properties = {};
-  endif
-
-  if (isscalar (x) && isvector (y))
-    len = numel (y);
-    if (numel (options) == 1)
-      options = repmat (options(:), len, 1);
-    endif
-    retval = zeros (len, 1);
-    for i = 1:len
-      tkey = options(i).key;
-      if (! isempty (tkey))
-	set (h, "key", "on");
-      endif
-      color = options(i).color;
-      if (isempty (color))
-	color = __next_line_color__ ();
-      endif
-
-      retval(i) = line (x, y(i), "keylabel", tkey, "color", color,
-			"linestyle", options(i).linestyle,
-			"marker", options(i).marker, properties{:});
-    endfor
-  else
-    error ("__plt2sv__: first arg must be scalar, second arg must be vector");
-  endif
-
-endfunction
diff --git a/scripts/plot/__plt2vm__.m b/scripts/plot/__plt2vm__.m
deleted file mode 100644
--- a/scripts/plot/__plt2vm__.m
+++ /dev/null
@@ -1,85 +0,0 @@
-## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2003, 2004,
-##               2005, 2006, 2007, 2008, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plt2vm__ (@var{h}, @var{x}, @var{y}, @var{options}, @var{properties})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plt2vm__ (h, x, y, options, properties)
-
-  if (nargin < 3 || nargin > 5)
-    print_usage ();
-  endif
-
-  if (nargin < 4 || isempty (options))
-    options = __default_plot_options__ ();
-  endif
-
-  if (nargin < 5)
-    properties = {};
-  endif
-
-  [x_nr, x_nc] = size (x);
-  [y_nr, y_nc] = size (y);
-
-  if (x_nr == 1)
-    x = x';
-    tmp = x_nr;
-    x_nr = x_nc;
-    x_nc = tmp;
-  endif
-
-  if (x_nr == y_nr)
-    1;
-  elseif (x_nr == y_nc)
-    y = y';
-    tmp = y_nr;
-    y_nr = y_nc;
-    y_nc = tmp;
-  else
-    error ("__plt2vm__: matrix dimensions must match");
-  endif
-
-  if (y_nc > 0)
-    if (numel (options) == 1)
-      options = repmat (options(:), y_nc, 1);
-    endif
-    retval = zeros (y_nc, 1);
-    for i = 1:y_nc
-      tkey = options(i).key;
-      if (! isempty (tkey))
-	set (h, "key", "on");
-      endif
-      color = options(i).color;
-      if (isempty (color))
-	color = __next_line_color__ ();
-      endif
-
-      retval(i) = line (x, y(:,i), "keylabel", tkey, "color", color,
-			"linestyle", options(i).linestyle,
-			"marker", options(i).marker, properties{:});
-    endfor
-  else
-    error ("__plt2vm__: arguments must be a matrices");
-  endif
-
-endfunction
diff --git a/scripts/plot/__plt2vs__.m b/scripts/plot/__plt2vs__.m
deleted file mode 100644
--- a/scripts/plot/__plt2vs__.m
+++ /dev/null
@@ -1,65 +0,0 @@
-## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2003, 2005,
-##               2006, 2007, 2008, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plt2vs__ (@var{h}, @var{x}, @var{y}, @var{options}, @var{properties})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plt2vs__ (h, x, y, options, properties)
-
-  if (nargin < 3 || nargin > 5)
-    print_usage ();
-  endif
-
-  if (nargin < 4 || isempty (options))
-    options = __default_plot_options__ ();
-  endif
-
-  if (nargin < 5)
-    properties = {};
-  endif
-
-  if (isvector (x) && isscalar (y))
-    len = numel (x);
-    if (numel (options) == 1)
-      options = repmat (options(:), len, 1);
-    endif
-    retval = zeros (len, 1);
-    for i = 1:len
-      tkey = options(i).key;
-      if (! isempty (tkey))
-	set (h, "key", "on");
-      endif
-      color = options(i).color;
-      if (isempty (color))
-	color = __next_line_color__ ();
-      endif
-
-      retval(i) = line (x(i), y, "keylabel", tkey, "color", color,
-			"linestyle", options(i).linestyle,
-			"marker", options(i).marker, properties{:});
-    endfor
-  else
-    error ("__plt2vs__: first arg must be vector, second arg must be scalar");
-  endif
-
-endfunction
diff --git a/scripts/plot/__plt2vv__.m b/scripts/plot/__plt2vv__.m
deleted file mode 100644
--- a/scripts/plot/__plt2vv__.m
+++ /dev/null
@@ -1,79 +0,0 @@
-## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2003, 2005,
-##               2006, 2007, 2008, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {} __plt2vv__ (@var{h}, @var{x}, @var{y}, @var{options}, @var{properties})
-## Undocumented internal function.
-## @end deftypefn
-
-## Author: jwe
-
-function retval = __plt2vv__ (h, x, y, options, properties)
-
-  if (nargin < 3 || nargin > 5)
-    print_usage ();
-  endif
-
-  if (nargin < 4 || isempty (options))
-    options = __default_plot_options__ ();
-  endif
-
-  if (nargin < 5)
-    properties = {};
-  endif
-
-  if (numel (options) > 1)
-    options = options(1);
-  endif
-
-  [x_nr, x_nc] = size (x);
-  [y_nr, y_nc] = size (y);
-
-  if (x_nr == 1)
-    x = x';
-    tmp = x_nr;
-    x_nr = x_nc;
-    x_nc = tmp;
-  endif
-
-  if (y_nr == 1)
-    y = y';
-    tmp = y_nr;
-    y_nr = y_nc;
-    y_nc = tmp;
-  endif
-
-  if (x_nr == y_nr)
-    key = options.key;
-    if (! isempty (key))
-      set (h, "key", "on");
-    endif
-    color = options.color;
-    if (isempty (color))
-      color = __next_line_color__ ();
-    endif
-
-    retval = line (x, y, "keylabel", key, "color", color,
-	      "linestyle", options.linestyle,
-	      "marker", options.marker, properties{:});
-  else
-    error ("__plt2vv__: vector lengths must match");
-  endif
-
-endfunction
diff --git a/scripts/plot/__pltopt1__.m b/scripts/plot/__pltopt1__.m
deleted file mode 100644
--- a/scripts/plot/__pltopt1__.m
+++ /dev/null
@@ -1,136 +0,0 @@
-## Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005,
-##               2006, 2007, 2009 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/>.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {[@var{options}, @var{valid}] =} __pltopt1__ (@var{caller}, @var{opt}, @var{err_on_invalid})
-## Undocumented internal function.
-## @end deftypefn
-
-## Really decode plot option strings.
-
-## Author: Rick Niles <niles@axp745.gsfc.nasa.gov>
-## Adapted-By: jwe
-## Maintainer: jwe
-
-function [options, valid] = __pltopt1__ (caller, opt, err_on_invalid)
-
-  options = __default_plot_options__ ();
-  valid = true;
-
-  more_opts = 1;
-
-  if (nargin != 2 && nargin != 3)
-    print_usage ();
-  endif
-
-  if (! ischar (opt))
-    return;
-  endif
-
-  have_linestyle = false;
-  have_marker = false;
-
-  ## If called by __errplot__, extract the linestyle before proceeding.
-  if (strcmp (caller,"__errplot__"))
-    if (strncmp (opt, "#~>", 3))
-      n = 3;
-    elseif (strncmp (opt, "#~", 2) || strncmp (opt, "~>", 2))
-      n = 2;
-    elseif (strncmp (opt, "~", 1) || strncmp (opt, ">", 1) 
-	    || strncmp (opt, "#", 1))
-      n = 1;
-    endif
-      options.linestyle = opt(1:n);
-      opt(1:n) = [];
-      have_linestyle = true;
-  endif
-
-  while (! isempty (opt))
-    if (strncmp (opt, "--", 2) || strncmp (opt, "-.", 2))
-      options.linestyle = opt(1:2);
-      have_linestyle = true;
-      n = 2;
-    else
-      topt = opt(1);
-      n = 1;
-      if (topt == "-" || topt == ":")
-	have_linestyle = true;
-	options.linestyle = topt;
-      elseif (topt == "+" || topt == "o" || topt == "*"
-	      || topt == "." || topt == "x" || topt == "s"
-	      || topt == "d" || topt == "^" || topt == "v"
-	      || topt == ">" || topt == "<" || topt == "p"
-	      || topt == "h" || topt == "@")
-	have_marker = true;
-	## Backward compatibility.  Leave undocumented.
-	if (topt == "@")
-	  topt = "+";
-	endif
-	options.marker = topt;
-### Numeric color specs for backward compatibility.  Leave undocumented.
-      elseif (topt == "k" || topt == "0")
-	options.color = [0, 0, 0];
-      elseif (topt == "r" || topt == "1")
-	options.color = [1, 0, 0];
-      elseif (topt == "g" || topt == "2")
-	options.color = [0, 1, 0];
-      elseif (topt == "b" || topt == "3")
-	options.color = [0, 0, 1];
-      elseif (topt == "y")
-	options.color = [1, 1, 0];
-      elseif (topt == "m" || topt == "4")
-	options.color = [1, 0, 1];
-      elseif (topt == "c" || topt == "5")
-	options.color = [0, 1, 1];
-      elseif (topt == "w" || topt == "6")
-	options.color = [1, 1, 1];
-      elseif (isspace (topt))
-	## Do nothing.
-      elseif (topt == ";")
-	t = index (opt(2:end), ";");
-	if (t)
-	  options.key = undo_string_escapes (opt(2:t));
-	  n = t+1;
-	else
-	  if (err_on_invalid)
-            error ("%s: unfinished key label", caller);
-	  else
-	    valid = false;
-	    options = __default_plot_options__ ();
-	    return;
-	  endif
-        endif
-      else
-	if (err_on_invalid)
-	  error ("%s: unrecognized format character: `%s'", caller, topt);
-	else
-	  valid = false;
-	  options = __default_plot_options__ ();
-	  return;
-	endif
-      endif
-    endif
-    opt(1:n) = [];
-  endwhile
-
-  if (have_marker && ! have_linestyle)
-    options.linestyle = "none";
-  endif
-
-endfunction
diff --git a/scripts/plot/area.m b/scripts/plot/area.m
--- a/scripts/plot/area.m
+++ b/scripts/plot/area.m
@@ -1,4 +1,5 @@
 ## Copyright (C) 2007, 2008, 2009 Michael Goffioul
+## Copyright (C) 2007, 2008, 2009 David Bateman
 ##
 ## This file is part of Octave.
 ##
@@ -98,3 +99,108 @@
   endif
 
 endfunction
+
+function retval = __area__ (ax, x, y, bv, varargin)
+
+  y0 = bv * ones (1, rows (y));
+  y0 = zeros (1, rows (y));
+  retval = [];
+  for i = 1: size (y, 2);
+    hg = hggroup ();
+    retval = [retval; hg];
+    args = __add_datasource__ ("area", hg, {"x", "y"}, varargin{:});
+
+    x1 = x(:, 1).';
+    y1 = y (:, i).';
+    addproperty ("xdata", hg, "data", x1);
+    addproperty ("ydata", hg, "data", y1);
+
+    addlistener (hg, "xdata", @update_data);
+    addlistener (hg, "ydata", @update_data);
+
+    if (i == 1)
+      h = patch (ax, [x1(1), x1, fliplr(x1)], [bv, y1, bv*ones(1, length(y1))],
+		 __next_line_color__ (), "parent", hg);
+    else
+      y1 = y0 + y1;
+      h = patch (ax, [x1(1), x1, fliplr(x1)], [y0(1), y1, fliplr(y0)],
+		 __next_line_color__ (), "parent", hg);
+    endif
+
+    y0 = y1;
+
+    addproperty ("basevalue", hg, "data", bv);
+    addlistener (hg, "basevalue", @move_baseline); 
+
+    addproperty ("edgecolor", hg, "patchedgecolor", get (h, "edgecolor"));
+    addproperty ("linewidth", hg, "patchlinewidth", get (h, "linewidth"));
+    addproperty ("linestyle", hg, "patchlinestyle", get (h, "linestyle"));
+    addproperty ("facecolor", hg, "patchfacecolor", get (h, "facecolor"));
+
+    addlistener (hg, "edgecolor", @update_props);
+    addlistener (hg, "linewidth", @update_props); 
+    addlistener (hg, "linestyle", @update_props); 
+    addlistener (hg, "facecolor", @update_props); 
+
+    addproperty ("areagroup", hg, "data");
+    set (retval, "areagroup", retval);
+
+    if (! isempty (args))
+      set (hg, args{:});
+    endif
+  endfor
+
+endfunction
+
+function update_props (h, d)
+  kids = get (h, "children");
+  set (kids, "edgecolor", get (h, "edgecolor"), 
+       "linewidth", get (h, "linewidth"),
+       "linestyle", get (h, "linestyle"),
+       "facecolor", get (h, "facecolor"));
+endfunction
+
+function move_baseline (h, d)
+  persistent recursion = false;
+
+  ## Don't allow recursion
+  if (! recursion)
+    unwind_protect
+      recursion = true;
+      hlist = get (h, "areagroup");
+      b0 = get (h, "basevalue");
+
+      for hh = hlist(:)'
+	if (hh != h)
+	  b1 = get (hh, "basevalue");
+	  if (b1 != b0)
+	    set (hh, "basevalue", b0);
+	  endif
+	endif
+      endfor
+      update_data (h, d);
+    unwind_protect_cleanup
+      recursion = false;
+    end_unwind_protect
+  endif
+endfunction
+
+function update_data (h, d)
+  hlist = get (h, "areagroup");
+  bv = get (h, "basevalue");
+  for i = 1 : length (hlist)
+    hh = hlist(i);
+    x1 = get (hh, "xdata")(:);
+    y1 = get (hh, "ydata")(:);
+
+    set (get (hh, "children"), "xdata", [x1(1); x1; flipud(x1)]);
+    if (i == 1)
+      set (get (hh, "children"), "ydata", [bv; y1; bv*ones(length(y1), 1)]);
+    else
+      y1 = y0 + y1;
+      set (get (hh, "children"), "ydata", [y0(1); y1; flipud(y0)]);
+    endif      
+
+    y0 = y1;
+  endfor
+endfunction
diff --git a/scripts/plot/module.mk b/scripts/plot/module.mk
--- a/scripts/plot/module.mk
+++ b/scripts/plot/module.mk
@@ -5,20 +5,28 @@
 
 GEN_FCN_FILES += $(plot_GEN_FCN_FILES)
 
+plot_PRIVATE_FCN_FILES = \
+  plot/private/__actual_axis_position__.m \
+  plot/private/__add_datasource__.m \
+  plot/private/__axes_limits__.m \
+  plot/private/__axis_label__.m \
+  plot/private/__bar__.m \
+  plot/private/__clabel__.m \
+  plot/private/__contour__.m \
+  plot/private/__default_plot_options__.m \
+  plot/private/__errcomm__.m \
+  plot/private/__errplot__.m \
+  plot/private/__ezplot__.m \
+  plot/private/__interp_cube__.m \
+  plot/private/__line__.m \
+  plot/private/__patch__.m \
+  plot/private/__plt__.m \
+  plot/private/__pltopt__.m \
+  plot/private/__quiver__.m \
+  plot/private/__scatter__.m \
+  plot/private/__stem__.m
+
 plot_FCN_FILES = \
-  plot/__actual_axis_position__.m \
-  plot/__add_datasource__.m \
-  plot/__area__.m \
-  plot/__axes_limits__.m \
-  plot/__axis_label__.m \
-  plot/__bar__.m \
-  plot/__bars__.m \
-  plot/__clabel__.m \
-  plot/__contour__.m \
-  plot/__default_plot_options__.m \
-  plot/__errcomm__.m \
-  plot/__errplot__.m \
-  plot/__ezplot__.m \
   plot/__gnuplot_get_var__.m \
   plot/__gnuplot_ginput__.m \
   plot/__gnuplot_has_feature__.m \
@@ -27,29 +35,9 @@
   plot/__go_close_all__.m \
   plot/__go_draw_axes__.m \
   plot/__go_draw_figure__.m \
-  plot/__interp_cube__.m \
-  plot/__line__.m \
   plot/__marching_cube__.m \
   plot/__next_line_color__.m \
-  plot/__patch__.m \
-  plot/__plr1__.m \
-  plot/__plr2__.m \
-  plot/__plt1__.m \
-  plot/__plt2__.m \
-  plot/__plt2mm__.m \
-  plot/__plt2mv__.m \
-  plot/__plt2ss__.m \
-  plot/__plt2sv__.m \
-  plot/__plt2vm__.m \
-  plot/__plt2vs__.m \
-  plot/__plt2vv__.m \
-  plot/__plt__.m \
   plot/__plt_get_axis_arg__.m \
-  plot/__pltopt1__.m \
-  plot/__pltopt__.m \
-  plot/__quiver__.m \
-  plot/__scatter__.m \
-  plot/__stem__.m \
   plot/allchild.m \
   plot/ancestor.m \
   plot/area.m \
@@ -170,7 +158,8 @@
   plot/ylabel.m \
   plot/ylim.m \
   plot/zlabel.m \
-  plot/zlim.m
+  plot/zlim.m \
+  $(plot_PRIVATE_FCN_FILES)
 
 FCN_FILES += $(plot_FCN_FILES)
 
diff --git a/scripts/plot/polar.m b/scripts/plot/polar.m
--- a/scripts/plot/polar.m
+++ b/scripts/plot/polar.m
@@ -80,3 +80,128 @@
   end_unwind_protect
 
 endfunction
+
+function retval = __plr1__ (h, theta, fmt)
+
+  if (nargin != 3)
+    print_usage ();
+  endif
+
+  [nr, nc] = size (theta);
+  if (nr == 1)
+    theta = theta';
+    tmp = nr;
+    nr = nc;
+    nc = tmp;
+  endif
+  theta_i = imag (theta);
+  if (any (theta_i))
+    rho = theta_i;
+    theta = real (theta);
+  else
+    rho = theta;
+    theta = (1:nr)';
+  endif
+
+  retval = __plr2__ (h, theta, rho, fmt);
+
+endfunction
+
+function retval = __plr2__ (h, theta, rho, fmt)
+
+  if (nargin != 4)
+    print_usage ();
+  endif
+
+  if (any (imag (theta)))
+    theta = real (theta);
+  endif
+
+  if (any (imag (rho)))
+    rho = real (rho);
+  endif
+
+  if (isscalar (theta))
+    if (isscalar (rho))
+      x = rho * cos (theta);
+      y = rho * sin (theta);
+      retval = __plt__ ("polar", h, x, y, fmt);
+    else
+      error ("__plr2__: invalid data for plotting");
+    endif
+  elseif (isvector (theta))
+    if (isvector (rho))
+      if (length (theta) != length (rho))
+        error ("__plr2__: vector lengths must match");
+      endif
+      if (rows (rho) == 1)
+        rho = rho';
+      endif
+      if (rows (theta) == 1)
+        theta = theta';
+      endif
+      x = rho .* cos (theta);
+      y = rho .* sin (theta);
+      retval = __plt__ ("polar", h, x, y, fmt);
+    elseif (ismatrix (rho))
+      [t_nr, t_nc] = size (theta);
+      if (t_nr == 1)
+        theta = theta';
+        tmp = t_nr;
+        t_nr = t_nc;
+        t_nc = tmp;
+      endif
+      [r_nr, r_nc] = size (rho);
+      if (t_nr != r_nr)
+        rho = rho';
+        tmp = r_nr;
+        r_nr = r_nc;
+        r_nc = tmp;
+      endif
+      if (t_nr != r_nr)
+        error ("__plr2__: vector and matrix sizes must match");
+      endif
+      x = diag (cos (theta)) * rho;
+      y = diag (sin (theta)) * rho;
+      retval = __plt__ ("polar", h, x, y, fmt);
+    else
+      error ("__plr2__: invalid data for plotting");
+    endif
+  elseif (ismatrix (theta))
+    if (isvector (rho))
+      [r_nr, r_nc] = size (rho);
+      if (r_nr == 1)
+        rho = rho';
+        tmp = r_nr;
+        r_nr = r_nc;
+        r_nc = tmp;
+      endif
+      [t_nr, t_nc] = size (theta);
+      if (r_nr != t_nr)
+        theta = theta';
+        tmp = t_nr;
+        t_nr = t_nc;
+        t_nc = tmp;
+      endif
+      if (r_nr != t_nr)
+        error ("__plr2__: vector and matrix sizes must match");
+      endif
+      diag_r = diag (rho);
+      x = diag_r * cos (theta);
+      y = diag_r * sin (theta);
+      retval = __plt__ ("polar", h, x, y, fmt);
+    elseif (ismatrix (rho))
+      if (! size_equal (rho, theta))
+        error ("__plr2__: matrix dimensions must match");
+      endif
+      x = rho .* cos (theta);
+      y = rho .* sin (theta);
+      retval = __plt__ ("polar", h, x, y, fmt);
+    else
+      error ("__plr2__: invalid data for plotting");
+    endif
+  else
+    error ("__plr2__: invalid data for plotting");
+  endif
+
+endfunction
diff --git a/scripts/plot/__actual_axis_position__.m b/scripts/plot/private/__actual_axis_position__.m
rename from scripts/plot/__actual_axis_position__.m
rename to scripts/plot/private/__actual_axis_position__.m
diff --git a/scripts/plot/__axes_limits__.m b/scripts/plot/private/__axes_limits__.m
rename from scripts/plot/__axes_limits__.m
rename to scripts/plot/private/__axes_limits__.m
diff --git a/scripts/plot/__axis_label__.m b/scripts/plot/private/__axis_label__.m
rename from scripts/plot/__axis_label__.m
rename to scripts/plot/private/__axis_label__.m
diff --git a/scripts/plot/__bar__.m b/scripts/plot/private/__bar__.m
rename from scripts/plot/__bar__.m
rename to scripts/plot/private/__bar__.m
--- a/scripts/plot/__bar__.m
+++ b/scripts/plot/private/__bar__.m
@@ -152,8 +152,8 @@
       axes (h);
       newplot ();
 
-      tmp = __bars__ (h, vertical, x, y, xb, yb, width, group,
-		      have_line_spec, bv, newargs{:});
+      tmp = bars (h, vertical, x, y, xb, yb, width, group,
+		  have_line_spec, bv, newargs{:});
       if (nargout == 1)
 	varargout{1} = tmp;
       endif
@@ -171,3 +171,253 @@
   endif
 
 endfunction
+
+function tmp = bars (ax, vertical, x, y, xb, yb, width, group, have_color_spec, base_value, varargin)
+
+  ycols = columns (y);
+  clim = get (ax, "clim");
+  tmp = [];
+
+  for i = 1:ycols
+    hg = hggroup ();
+    tmp = [tmp; hg];
+    args = __add_datasource__ ("bar", hg, {"x", "y"}, varargin{:});
+    
+    if (vertical)
+      if (! have_color_spec)
+	if (ycols == 1)
+	  lev = clim(1);
+	else
+	  lev = (i - 1) * (clim(2) - clim(1)) / (ycols - 1) - clim(1);
+	endif
+	h = patch(xb(:,:,i), yb(:,:,i), "FaceColor", "flat", 
+		  "cdata", lev, "parent", hg);
+      else
+	h = patch(xb(:,:,i), yb(:,:,i), "parent", hg);
+      endif
+    else
+      if (! have_color_spec)
+	if (ycols == 1)
+	  lev = clim(1)
+	else
+	  lev = (i - 1) * (clim(2) - clim(1)) / (ycols - 1) - clim(1);
+	endif
+	h = patch(yb(:,:,i), xb(:,:,i), "FaceColor", "flat", 
+		  "cdata", lev, "parent", hg);
+      else
+	h = patch(yb(:,:,i), xb(:,:,i), "parent", hg);
+      endif
+    endif
+
+    if (i == 1)
+      x_axis_range = get (ax, "xlim");
+      h_baseline = line (x_axis_range, [0, 0], "color", [0, 0, 0]);
+      set (h_baseline, "handlevisibility", "off");
+      set (h_baseline, "xliminclude", "off");
+      addlistener (ax, "xlim", @update_xlim);
+      addlistener (h_baseline, "ydata", @update_baseline);
+      addlistener (h_baseline, "visible", @update_baseline);
+    endif
+
+    ## Setup the hggroup and listeners
+    addproperty ("showbaseline", hg, "radio", "{on}|off");
+    addproperty ("basevalue", hg, "data", base_value);
+    addproperty ("baseline", hg, "data", h_baseline);
+
+    addlistener (hg, "showbaseline", @show_baseline);
+    addlistener (hg, "basevalue", @move_baseline); 
+
+    addproperty ("barwidth", hg, "data", width);
+    if (group)
+      addproperty ("barlayout", hg, "radio", "stacked|{grouped}", "grouped");
+    else
+      addproperty ("barlayout", hg, "radio", "{stacked}|grouped", "stacked");
+    endif
+    if (vertical)
+      addproperty ("horizontal", hg, "radio", "on|{off}", "off")
+    else
+      addproperty ("horizontal", hg, "radio", "{on}|off", "on")
+    endif
+
+    addlistener (hg, "barwidth", @update_group);
+    addlistener (hg, "barlayout", @update_group);
+    addlistener (hg, "horizontal", @update_group);
+
+    addproperty ("edgecolor", hg, "patchedgecolor", get (h, "edgecolor"));
+    addproperty ("linewidth", hg, "patchlinewidth", get (h, "linewidth"));
+    addproperty ("linestyle", hg, "patchlinestyle", get (h, "linestyle"));
+    addproperty ("facecolor", hg, "patchfacecolor", get (h, "facecolor"));
+
+    addlistener (hg, "edgecolor", @update_props);
+    addlistener (hg, "linewidth", @update_props); 
+    addlistener (hg, "linestyle", @update_props); 
+    addlistener (hg, "facecolor", @update_props); 
+
+    if (isvector (x))
+      addproperty ("xdata", hg, "data", x);
+    else
+      addproperty ("xdata", hg, "data", x(:, i));
+    endif
+    addproperty ("ydata", hg, "data", y(:, i));
+ 
+    addlistener (hg, "xdata", @update_data);
+    addlistener (hg, "ydata", @update_data);
+
+    addproperty ("bargroup", hg, "data");
+    set (tmp, "bargroup", tmp);
+    if (! isempty (args))
+      set (hg, args{:});
+    endif
+    if (i == 1)
+      set (h_baseline, "parent", get (hg, "parent"));
+    endif
+  endfor
+
+  update_xlim (ax, []);
+endfunction
+
+function update_xlim (h, d)
+  kids = get (h, "children");
+  xlim = get (h, "xlim");
+
+  for i = 1 : length (kids)
+    obj = get (kids (i));
+    if (strcmp (obj.type, "hggroup") && isfield (obj, "baseline"))
+      if (any (get (obj.baseline, "xdata") != xlim))
+	set (obj.baseline, "xdata", xlim);
+      endif
+    endif
+  endfor
+endfunction
+
+function update_baseline (h, d)
+  visible = get (h, "visible");
+  ydata = get (h, "ydata")(1);
+
+  kids = get (get (h, "parent"), "children");
+  for i = 1 : length (kids)
+    obj = get (kids (i));
+    if (strcmp (obj.type, "hggroup") && isfield (obj, "baseline") 
+	&& obj.baseline == h)
+      ## Only alter if changed to avoid recursion of the listener functions
+      if (! strcmpi (get (kids(i), "showbaseline"), visible))
+	set (kids (i), "showbaseline", visible);
+      endif
+      if (! strcmpi (get (kids(i), "basevalue"), visible))
+	set (kids (i), "basevalue", ydata);
+      endif
+    endif
+  endfor
+endfunction
+
+function show_baseline (h, d)
+  persistent recursion = false;
+
+  ## Don't allow recursion
+  if (! recursion)
+    unwind_protect
+      recursion = true;
+      hlist = get (h, "bargroup");
+      showbaseline = get (h, "showbaseline");
+      for hh = hlist(:)'
+	if (hh != h)
+	  set (hh, "showbaseline", showbaseline);
+	endif
+      endfor
+      set (get (h, "baseline"), "visible", showbaseline);
+    unwind_protect_cleanup
+      recursion = false;
+    end_unwind_protect
+  endif
+endfunction
+
+function move_baseline (h, d)
+  b0 = get (h, "basevalue");
+  bl = get (h, "baseline");
+
+  if (get (bl, "ydata") != [b0, b0])
+    set (bl, "ydata", [b0, b0]);
+  endif
+
+  if (strcmpi (get (h, "barlayout"), "grouped"))
+    update_data (h, d);
+  endif
+endfunction
+
+function update_props (h, d)
+  kids = get (h, "children");
+  set (kids, "edgecolor", get (h, "edgecolor"), 
+       "linewidth", get (h, "linewidth"),
+       "linestyle", get (h, "linestyle"),
+       "facecolor", get (h, "facecolor"));
+endfunction
+
+function update_data (h, d)
+  persistent recursion = false;
+
+  ## Don't allow recursion
+  if (! recursion)
+    unwind_protect
+      recursion = true;
+      hlist = get (h, "bargroup");
+      x = get (h, "xdata");
+      if (!isvector (x))
+	x = x(:);
+      endif
+      y = [];
+      for hh = hlist(:)'
+	ytmp = get (hh, "ydata");
+	y = [y ytmp(:)];
+      endfor
+
+      [xb, yb] = bar (x, y, get (h, "barwidth"), get (h, "barlayout"),
+		      "basevalue", get (h, "basevalue"));
+      ny = columns (y);
+      vert = strcmpi (get (h, "horizontal"), "off");
+
+      for i = 1:ny
+	hp = get (hlist(i), "children");
+	if (vert)
+	  set (hp, "xdata", xb(:,:,i), "ydata", yb(:,:,i));
+	else
+	  set (hp, "xdata", yb(:,:,i), "ydata", xb(:,:,i));
+	endif
+      endfor
+    unwind_protect_cleanup
+      recursion = false;
+    end_unwind_protect
+  endif
+endfunction
+
+function update_group (h, d)
+  persistent recursion = false;
+
+  ## Don't allow recursion
+  if (! recursion)
+    unwind_protect
+      recursion = true;
+      hlist = get (h, "bargroup");
+      barwidth = get(h, "barwidth");
+      barlayout = get (h, "barlayout");
+      horizontal = get (h, "horizontal");
+
+      ## To prevent recursion, only change if modified
+      for hh = hlist(:)'
+	if (hh != h)
+	  if (get (hh, "barwidth") != barwidth)
+	    set (hh, "barwidth", barwidth);
+	  endif
+	  if (! strcmpi (get (hh, "barlayout"), barlayout))
+	    set (hh, "barlayout", barlayout);
+	  endif
+	  if (! strcmpi (get (hh, "horizontal"), horizontal))
+	    set (hh, "horizontal", horizontal);
+	  endif
+	endif
+      endfor
+      update_data (h, d);
+    unwind_protect_cleanup
+      recursion = false;
+    end_unwind_protect
+  endif
+endfunction
diff --git a/scripts/plot/__clabel__.m b/scripts/plot/private/__clabel__.m
rename from scripts/plot/__clabel__.m
rename to scripts/plot/private/__clabel__.m
diff --git a/scripts/plot/__contour__.m b/scripts/plot/private/__contour__.m
rename from scripts/plot/__contour__.m
rename to scripts/plot/private/__contour__.m
diff --git a/scripts/plot/__default_plot_options__.m b/scripts/plot/private/__default_plot_options__.m
rename from scripts/plot/__default_plot_options__.m
rename to scripts/plot/private/__default_plot_options__.m
diff --git a/scripts/plot/__errcomm__.m b/scripts/plot/private/__errcomm__.m
rename from scripts/plot/__errcomm__.m
rename to scripts/plot/private/__errcomm__.m
diff --git a/scripts/plot/__errplot__.m b/scripts/plot/private/__errplot__.m
rename from scripts/plot/__errplot__.m
rename to scripts/plot/private/__errplot__.m
diff --git a/scripts/plot/__ezplot__.m b/scripts/plot/private/__ezplot__.m
rename from scripts/plot/__ezplot__.m
rename to scripts/plot/private/__ezplot__.m
diff --git a/scripts/plot/__interp_cube__.m b/scripts/plot/private/__interp_cube__.m
rename from scripts/plot/__interp_cube__.m
rename to scripts/plot/private/__interp_cube__.m
diff --git a/scripts/plot/__line__.m b/scripts/plot/private/__line__.m
rename from scripts/plot/__line__.m
rename to scripts/plot/private/__line__.m
diff --git a/scripts/plot/__patch__.m b/scripts/plot/private/__patch__.m
rename from scripts/plot/__patch__.m
rename to scripts/plot/private/__patch__.m
diff --git a/scripts/plot/__plt__.m b/scripts/plot/private/__plt__.m
rename from scripts/plot/__plt__.m
rename to scripts/plot/private/__plt__.m
--- a/scripts/plot/__plt__.m
+++ b/scripts/plot/private/__plt__.m
@@ -118,3 +118,442 @@
 
 endfunction
   
+function retval = __plt1__ (h, x1, options, properties)
+
+  if (nargin < 2 || nargin > 4)
+    print_usage ();
+  endif
+
+  if (nargin < 3 || isempty (options))
+    options = __default_plot_options__ ();
+  endif
+
+  if (nargin < 4)
+    properties = {};
+  endif
+
+  if (! isstruct (options))
+    error ("__plt1__: options must be a struct array");
+  endif
+
+  [nr, nc] = size (x1);
+  if (nr == 1)
+    x1 = x1.';
+    tmp = nr;
+    nr = nc;
+    nc = tmp;
+  endif
+  x1_i = imag (x1);
+  if (any (any (x1_i)))
+    x2 = x1_i;
+    x1 = real (x1);
+  else
+    x2 = x1;
+    x1 = (1:nr)';
+  endif
+
+  retval = __plt2__ (h, x1, x2, options, properties);
+
+endfunction
+
+function retval = __plt2__ (h, x1, x2, options, properties)
+
+  if (nargin < 3 || nargin > 5)
+    print_usage ();
+  endif
+
+  if (nargin < 4 || isempty (options))
+    options = __default_plot_options__ ();
+  endif
+
+  if (nargin < 5)
+    properties = {};
+  endif
+
+  if (! isstruct (options))
+    error ("__plt1__: options must be a struct array");
+  endif
+
+  if (any (any (imag (x1))))
+    x1 = real (x1);
+  endif
+
+  if (any (any (imag (x2))))
+    x2 = real (x2);
+  endif
+
+  h_set = false;
+  if (isempty (x1) && isempty (x2))
+    retval = zeros (0, 1);
+  elseif (isscalar (x1))
+    if (isscalar (x2))
+      retval = __plt2ss__ (h, x1, x2, options, properties);
+    elseif (isvector (x2))
+      retval = __plt2sv__ (h, x1, x2, options, properties);
+    else
+      error ("__plt2__: invalid data for plotting");
+    endif
+  elseif (isvector (x1))
+    if (isscalar (x2))
+      retval = __plt2vs__ (h, x1, x2, options, properties);
+    elseif (isvector (x2))
+      retval = __plt2vv__ (h, x1, x2, options, properties);
+    elseif (ismatrix (x2))
+      retval = __plt2vm__ (h, x1, x2, options, properties);
+    else
+      error ("__plt2__: invalid data for plotting");
+    endif
+  elseif (ismatrix (x1))
+    if (isvector (x2))
+      retval = __plt2mv__ (h, x1, x2, options, properties);
+    elseif (ismatrix (x2))
+      retval = __plt2mm__ (h, x1, x2, options, properties);
+    else
+      error ("__plt2__: invalid data for plotting");
+    endif
+  else
+    error ("__plt2__: invalid data for plotting");
+  endif
+
+endfunction
+
+function retval = __plt2mm__ (h, x, y, options, properties)
+
+  if (nargin < 3 || nargin > 5)
+    print_usage ();
+  endif
+
+  if (nargin < 4 || isempty (options))
+    options = __default_plot_options__ ();
+  endif
+
+  if (nargin < 5)
+    properties = {};
+  endif
+
+  [x_nr, x_nc] = size (x);
+  [y_nr, y_nc] = size (y);
+
+  k = 1;
+  if (x_nr == y_nr && x_nc == y_nc)
+    if (x_nc > 0)
+      if (numel (options) == 1)
+	options = repmat (options(:), x_nc, 1);
+      endif
+      retval = zeros (x_nc, 1);
+      for i = 1:x_nc
+	tkey = options(i).key;
+	if (! isempty (tkey))
+	  set (h, "key", "on");
+	endif
+	color = options(i).color;
+	if (isempty (color))
+	  color = __next_line_color__ ();
+	endif
+
+	retval(i) = line (x(:,i), y(:,i), "keylabel", tkey, "color", color,
+			  "linestyle", options(i).linestyle,
+			  "marker", options(i).marker, properties{:});
+      endfor
+    else
+      error ("__plt2mm__: arguments must be a matrices");
+    endif
+  else
+    error ("__plt2mm__: matrix dimensions must match");
+  endif
+
+endfunction
+
+function retval = __plt2mv__ (h, x, y, options, properties)
+
+  if (nargin < 3 || nargin > 5)
+    print_usage ();
+  endif
+
+  if (nargin < 4 || isempty (options))
+    options = __default_plot_options__ ();
+  endif
+
+  if (nargin < 5)
+    properties = {};
+  endif
+
+  [x_nr, x_nc] = size (x);
+  [y_nr, y_nc] = size (y);
+
+  if (y_nr == 1)
+    y = y';
+    tmp = y_nr;
+    y_nr = y_nc;
+    y_nc = tmp;
+  endif
+
+  if (x_nr == y_nr)
+    1;
+  elseif (x_nc == y_nr)
+    x = x';
+    tmp = x_nr;
+    x_nr = x_nc;
+    x_nc = tmp;
+  else
+    error ("__plt2mv__: matrix dimensions must match");
+  endif
+
+  if (x_nc > 0)
+    if (numel (options) == 1)
+      options = repmat (options(:), x_nc, 1);
+    endif
+    retval = zeros (x_nc, 1);
+    for i = 1:x_nc
+      tkey = options(i).key;
+      if (! isempty (tkey))
+	set (h, "key", "on");
+      endif
+      color = options(i).color;
+      if (isempty (color))
+	color = __next_line_color__ ();
+      endif
+
+      retval(i) = line (x(:,i), y, "keylabel", tkey, "color", color,
+			"linestyle", options(i).linestyle,
+			"marker", options(i).marker, properties{:});
+    endfor
+  else
+    error ("__plt2mv__: arguments must be a matrices");
+  endif
+
+endfunction
+
+function retval = __plt2ss__ (h, x, y, options, properties)
+
+  if (nargin < 3 || nargin > 5)
+    print_usage ();
+  endif
+
+  if (nargin < 4 || isempty (options))
+    options = __default_plot_options__ ();
+  endif
+
+  if (nargin < 5)
+    properties = {};
+  endif
+
+  if (numel (options) > 1)
+    options = options(1);
+  endif
+
+  [x_nr, x_nc] = size (x);
+  [y_nr, y_nc] = size (y);
+
+  if (x_nr == 1 && x_nr == y_nr && x_nc == 1 && x_nc == y_nc)
+    key = options.key;
+    if (! isempty (key))
+      set (h, "key", "on");
+    endif
+    color = options.color;
+    if (isempty (color))
+      color = __next_line_color__ ();
+    endif
+
+    retval = line (x, y, "keylabel", key, "color", color,
+		   "linestyle", options.linestyle,
+		   "marker", options.marker, properties{:});
+  else
+    error ("__plt2ss__: arguments must be scalars");
+  endif
+
+endfunction
+
+function retval = __plt2sv__ (h, x, y, options, properties)
+
+  if (nargin < 3 || nargin > 5)
+    print_usage ();
+  endif
+
+  if (nargin < 4 || isempty (options))
+    options = __default_plot_options__ ();
+  endif
+
+  if (nargin < 5)
+    properties = {};
+  endif
+
+  if (isscalar (x) && isvector (y))
+    len = numel (y);
+    if (numel (options) == 1)
+      options = repmat (options(:), len, 1);
+    endif
+    retval = zeros (len, 1);
+    for i = 1:len
+      tkey = options(i).key;
+      if (! isempty (tkey))
+	set (h, "key", "on");
+      endif
+      color = options(i).color;
+      if (isempty (color))
+	color = __next_line_color__ ();
+      endif
+
+      retval(i) = line (x, y(i), "keylabel", tkey, "color", color,
+			"linestyle", options(i).linestyle,
+			"marker", options(i).marker, properties{:});
+    endfor
+  else
+    error ("__plt2sv__: first arg must be scalar, second arg must be vector");
+  endif
+
+endfunction
+
+function retval = __plt2vm__ (h, x, y, options, properties)
+
+  if (nargin < 3 || nargin > 5)
+    print_usage ();
+  endif
+
+  if (nargin < 4 || isempty (options))
+    options = __default_plot_options__ ();
+  endif
+
+  if (nargin < 5)
+    properties = {};
+  endif
+
+  [x_nr, x_nc] = size (x);
+  [y_nr, y_nc] = size (y);
+
+  if (x_nr == 1)
+    x = x';
+    tmp = x_nr;
+    x_nr = x_nc;
+    x_nc = tmp;
+  endif
+
+  if (x_nr == y_nr)
+    1;
+  elseif (x_nr == y_nc)
+    y = y';
+    tmp = y_nr;
+    y_nr = y_nc;
+    y_nc = tmp;
+  else
+    error ("__plt2vm__: matrix dimensions must match");
+  endif
+
+  if (y_nc > 0)
+    if (numel (options) == 1)
+      options = repmat (options(:), y_nc, 1);
+    endif
+    retval = zeros (y_nc, 1);
+    for i = 1:y_nc
+      tkey = options(i).key;
+      if (! isempty (tkey))
+	set (h, "key", "on");
+      endif
+      color = options(i).color;
+      if (isempty (color))
+	color = __next_line_color__ ();
+      endif
+
+      retval(i) = line (x, y(:,i), "keylabel", tkey, "color", color,
+			"linestyle", options(i).linestyle,
+			"marker", options(i).marker, properties{:});
+    endfor
+  else
+    error ("__plt2vm__: arguments must be a matrices");
+  endif
+
+endfunction
+
+function retval = __plt2vs__ (h, x, y, options, properties)
+
+  if (nargin < 3 || nargin > 5)
+    print_usage ();
+  endif
+
+  if (nargin < 4 || isempty (options))
+    options = __default_plot_options__ ();
+  endif
+
+  if (nargin < 5)
+    properties = {};
+  endif
+
+  if (isvector (x) && isscalar (y))
+    len = numel (x);
+    if (numel (options) == 1)
+      options = repmat (options(:), len, 1);
+    endif
+    retval = zeros (len, 1);
+    for i = 1:len
+      tkey = options(i).key;
+      if (! isempty (tkey))
+	set (h, "key", "on");
+      endif
+      color = options(i).color;
+      if (isempty (color))
+	color = __next_line_color__ ();
+      endif
+
+      retval(i) = line (x(i), y, "keylabel", tkey, "color", color,
+			"linestyle", options(i).linestyle,
+			"marker", options(i).marker, properties{:});
+    endfor
+  else
+    error ("__plt2vs__: first arg must be vector, second arg must be scalar");
+  endif
+
+endfunction
+
+function retval = __plt2vv__ (h, x, y, options, properties)
+
+  if (nargin < 3 || nargin > 5)
+    print_usage ();
+  endif
+
+  if (nargin < 4 || isempty (options))
+    options = __default_plot_options__ ();
+  endif
+
+  if (nargin < 5)
+    properties = {};
+  endif
+
+  if (numel (options) > 1)
+    options = options(1);
+  endif
+
+  [x_nr, x_nc] = size (x);
+  [y_nr, y_nc] = size (y);
+
+  if (x_nr == 1)
+    x = x';
+    tmp = x_nr;
+    x_nr = x_nc;
+    x_nc = tmp;
+  endif
+
+  if (y_nr == 1)
+    y = y';
+    tmp = y_nr;
+    y_nr = y_nc;
+    y_nc = tmp;
+  endif
+
+  if (x_nr == y_nr)
+    key = options.key;
+    if (! isempty (key))
+      set (h, "key", "on");
+    endif
+    color = options.color;
+    if (isempty (color))
+      color = __next_line_color__ ();
+    endif
+
+    retval = line (x, y, "keylabel", key, "color", color,
+	      "linestyle", options.linestyle,
+	      "marker", options.marker, properties{:});
+  else
+    error ("__plt2vv__: vector lengths must match");
+  endif
+
+endfunction
diff --git a/scripts/plot/__pltopt__.m b/scripts/plot/private/__pltopt__.m
rename from scripts/plot/__pltopt__.m
rename to scripts/plot/private/__pltopt__.m
--- a/scripts/plot/__pltopt__.m
+++ b/scripts/plot/private/__pltopt__.m
@@ -120,3 +120,116 @@
   endif
 
 endfunction
+
+## Really decode plot option strings.
+
+## Author: Rick Niles <niles@axp745.gsfc.nasa.gov>
+## Adapted-By: jwe
+## Maintainer: jwe
+
+function [options, valid] = __pltopt1__ (caller, opt, err_on_invalid)
+
+  options = __default_plot_options__ ();
+  valid = true;
+
+  more_opts = 1;
+
+  if (nargin != 2 && nargin != 3)
+    print_usage ();
+  endif
+
+  if (! ischar (opt))
+    return;
+  endif
+
+  have_linestyle = false;
+  have_marker = false;
+
+  ## If called by __errplot__, extract the linestyle before proceeding.
+  if (strcmp (caller,"__errplot__"))
+    if (strncmp (opt, "#~>", 3))
+      n = 3;
+    elseif (strncmp (opt, "#~", 2) || strncmp (opt, "~>", 2))
+      n = 2;
+    elseif (strncmp (opt, "~", 1) || strncmp (opt, ">", 1) 
+	    || strncmp (opt, "#", 1))
+      n = 1;
+    endif
+      options.linestyle = opt(1:n);
+      opt(1:n) = [];
+      have_linestyle = true;
+  endif
+
+  while (! isempty (opt))
+    if (strncmp (opt, "--", 2) || strncmp (opt, "-.", 2))
+      options.linestyle = opt(1:2);
+      have_linestyle = true;
+      n = 2;
+    else
+      topt = opt(1);
+      n = 1;
+      if (topt == "-" || topt == ":")
+	have_linestyle = true;
+	options.linestyle = topt;
+      elseif (topt == "+" || topt == "o" || topt == "*"
+	      || topt == "." || topt == "x" || topt == "s"
+	      || topt == "d" || topt == "^" || topt == "v"
+	      || topt == ">" || topt == "<" || topt == "p"
+	      || topt == "h" || topt == "@")
+	have_marker = true;
+	## Backward compatibility.  Leave undocumented.
+	if (topt == "@")
+	  topt = "+";
+	endif
+	options.marker = topt;
+### Numeric color specs for backward compatibility.  Leave undocumented.
+      elseif (topt == "k" || topt == "0")
+	options.color = [0, 0, 0];
+      elseif (topt == "r" || topt == "1")
+	options.color = [1, 0, 0];
+      elseif (topt == "g" || topt == "2")
+	options.color = [0, 1, 0];
+      elseif (topt == "b" || topt == "3")
+	options.color = [0, 0, 1];
+      elseif (topt == "y")
+	options.color = [1, 1, 0];
+      elseif (topt == "m" || topt == "4")
+	options.color = [1, 0, 1];
+      elseif (topt == "c" || topt == "5")
+	options.color = [0, 1, 1];
+      elseif (topt == "w" || topt == "6")
+	options.color = [1, 1, 1];
+      elseif (isspace (topt))
+	## Do nothing.
+      elseif (topt == ";")
+	t = index (opt(2:end), ";");
+	if (t)
+	  options.key = undo_string_escapes (opt(2:t));
+	  n = t+1;
+	else
+	  if (err_on_invalid)
+            error ("%s: unfinished key label", caller);
+	  else
+	    valid = false;
+	    options = __default_plot_options__ ();
+	    return;
+	  endif
+        endif
+      else
+	if (err_on_invalid)
+	  error ("%s: unrecognized format character: `%s'", caller, topt);
+	else
+	  valid = false;
+	  options = __default_plot_options__ ();
+	  return;
+	endif
+      endif
+    endif
+    opt(1:n) = [];
+  endwhile
+
+  if (have_marker && ! have_linestyle)
+    options.linestyle = "none";
+  endif
+
+endfunction
diff --git a/scripts/plot/__quiver__.m b/scripts/plot/private/__quiver__.m
rename from scripts/plot/__quiver__.m
rename to scripts/plot/private/__quiver__.m
diff --git a/scripts/plot/__scatter__.m b/scripts/plot/private/__scatter__.m
rename from scripts/plot/__scatter__.m
rename to scripts/plot/private/__scatter__.m
diff --git a/scripts/plot/__stem__.m b/scripts/plot/private/__stem__.m
rename from scripts/plot/__stem__.m
rename to scripts/plot/private/__stem__.m