--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@smodel/inv.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,88 @@
+% INV evaluates the inverse of smodel objects.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: INV evaluates the inverse of smodel objects
+%
+% CALL:        mdl = inv(mdl)
+%
+% <a href="matlab:utils.helper.displayMethodInfo('smodel', 'inv')">Parameters Description</a>
+%
+% VERSION:     $Id: inv.m,v 1.9 2011/04/08 08:56:30 hewitson Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function varargout = inv(varargin)
+  
+  % Settings
+  operatorName   = 'inv';
+  
+  % Check if this is a call for parameters
+  if utils.helper.isinfocall(varargin{:})
+    varargout{1} = getInfo(varargin{3});
+    return
+  end
+  
+  % Check if the method was called by another method
+  callerIsMethod = utils.helper.callerIsMethod;
+  
+  % Collect input variable names
+  in_names = cell(size(varargin));
+  for ii = 1:nargin,in_names{ii} = inputname(ii);end
+  
+  % Collect all smodels and plists
+  [as, smodel_invars, rest] = utils.helper.collect_objects(varargin(:), 'smodel', in_names);
+  pl        = utils.helper.collect_objects(varargin(:), 'plist');
+  
+  % Decide  on a deep copy or a modify
+  mdls = copy(as, nargout);
+  
+  % Combine plists
+  pl = parse(pl, getDefaultPlist());
+  
+  % Apply the operator
+  mdls.op(operatorName);
+ 
+  if ~callerIsMethod
+    % Add history
+    mdls.addHistory(getInfo('None'), pl, smodel_invars, [mdls(:).hist]);
+    
+    % Set name
+    mdls.name   = [operatorName '(' mdls.name ')'];
+  end
+  
+  % Set output
+  varargout{1} = mdls;
+  
+end
+
+%--------------------------------------------------------------------------
+% Get Info Object
+%--------------------------------------------------------------------------
+function ii = getInfo(varargin)
+  
+  if nargin == 1 && strcmpi(varargin{1}, 'None')
+    sets = {};
+    pls  = [];
+  else
+    sets = {'Default'};
+    pls  = getDefaultPlist();
+  end
+  % Build info object
+  ii = minfo(mfilename, 'smodel', 'ltpda', utils.const.categories.op, '$Id: inv.m,v 1.9 2011/04/08 08:56:30 hewitson Exp $', sets, pls);
+  ii.setArgsmin(1);
+end
+
+%--------------------------------------------------------------------------
+% Get Default Plist
+%--------------------------------------------------------------------------
+function plout = getDefaultPlist()
+  persistent pl;  
+  if ~exist('pl', 'var') || isempty(pl)
+    pl = buildplist();
+  end
+  plout = pl;  
+end
+
+function pl = buildplist()
+  pl = plist.EMPTY_PLIST;
+end