function a = pbaspect(arg1, arg2)
%PBASPECT Plot box aspect ratio.
%   PBAR = PBASPECT             gets the plot box aspect ratio of the
%                                  current axes. 
%   PBASPECT([X Y Z])           sets the plot box aspect ratio.
%   PBARMODE = PBASPECT('mode') gets the plot box aspect ratio mode.
%   PBASPECT(mode)              sets the plot box aspect ratio mode.
%                                  (mode can be 'auto' or 'manual')
%   PBASPECT(AX,...)            uses axes AX instead of current axes.
%
%   PBASPECT sets or gets the PlotBoxAspectRatio or
%   PlotBoxAspectRatioMode property of an axes.
%
%   See also DASPECT, XLIM, YLIM, ZLIM.
 
%   Copyright 1984-2002 The MathWorks, Inc. 
%   $Revision: 1.7 $  $Date: 2002/04/15 04:28:49 $

if nargin == 0
  a = get(gca,'plotboxaspectratio');
else
  if length(arg1)==1 & ishandle(arg1) & strcmp(get(arg1, 'type'), 'axes')
    ax = arg1;
    if nargin==2
      val = arg2;
    else
      a = get(ax,'plotboxaspectratio');
      return
    end
  else
    if nargin==2
      error('Wrong number of arguments')
    else
      ax = gca;
      val = arg1;
    end
  end
    
  if isstr(val)
    if(strcmp(val,'mode'))
      a = get(ax,'plotboxaspectratiomode');
    else
      set(ax,'plotboxaspectratiomode',val);
    end
  else
    set(ax,'plotboxaspectratio',val);
  end
end