--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@pzmodel/setZeros.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,140 @@
+% SETZEROS Set the property 'zeros' of a pole/zero model.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: SETZEROS Set the property 'zeros' of a pole/zero model.
+%
+% CALL:        obj = obj.setZeros(zeros);
+%
+% INPUTS:      obj   - is a pzmodel object
+%              zeros - cell-array      --> {[f1,q1], f2, c3}
+%                      comma separated --> [f1,q1], f2, c3
+%                      zero-array      --> [pz(f1,q1), pz(f2), pz(c3)]
+%
+%                      f:     frequency
+%                      [f,q]: frequency and Q
+%                      c:     complex representation
+%
+% EXAPLES:     obj = obj.setZeros(3, [8 1]);
+%              obj = obj.setZeros(3, [8 1], 7);
+%              obj = obj.setZeros([pz(3), pz(8,1), pz(7)]);
+%              obj = setZeros(obj, pz(2));
+%
+% <a href="matlab:utils.helper.displayMethodInfo('pzmodel', 'setZeros')">Parameters Description</a>
+%
+% VERSION:     $Id: setZeros.m,v 1.10 2011/08/15 12:02:36 hewitson Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function varargout = setZeros(varargin)
+  
+  %%% Check if this is a call for parameters
+  if utils.helper.isinfocall(varargin{:})
+    varargout{1} = getInfo(varargin{3});
+    return
+  end
+  
+  %%% Internal call: Only one object + don't look for a plist
+  if utils.helper.callerIsMethod
+    
+    %%% decide whether we modify the first object, or create a new one.
+    varargin{1} = copy(varargin{1}, nargout);
+    
+    for ii = 1:numel(varargin{1})
+      if ~isempty(varargin{2})
+        if isa(varargin{2}, 'pz')
+          varargin{1}(ii).zeros = [varargin{2:end}];
+        else
+          varargin{1}(ii).zeros = pz(varargin(2:end));
+        end
+      end
+    end
+    varargout{1} = varargin{1};
+    return
+  end
+  
+  import utils.const.*
+  utils.helper.msg(msg.PROC3, 'running %s/%s', mfilename('class'), mfilename);
+  
+  % Collect input variable names
+  in_names = cell(size(varargin));
+  for ii = 1:nargin,in_names{ii} = inputname(ii);end
+  
+  % Collect all AOs
+  [as, ao_invars,rest] = utils.helper.collect_objects(varargin(:), 'ltpda_tf', in_names);
+  [pls,  invars, rest] = utils.helper.collect_objects(rest(:), 'plist');
+  
+  %%% If pls contains only one plist with the only key 'zeros' then set the
+  %%% property with a plist.
+  if length(pls) == 1 && isa(pls, 'plist') && nparams(pls) == 1 && isparam(pls, 'zeros')
+    rest = find(pls, 'zeros');
+  end
+  
+  %%% Combine plists
+  if isempty(pls)
+    pls = plist('zeros', rest);
+  else
+    pls = pls.combine(plist('zeros', rest));
+  end
+  
+  % Decide on a deep copy or a modify
+  bs = copy(as, nargout);
+  
+  % Loop over AOs
+  for j=1:numel(bs)
+    if isa(rest{1}, 'pz')
+      bs(j).zeros = rest{1};
+    else
+      bs(j).zeros = pz(rest);
+    end
+    bs(j).addHistory(getInfo('None'), pls, ao_invars(j), bs(j).hist);
+  end
+  
+  %%% Set output
+  if nargout == numel(bs)
+    % List of outputs
+    for ii = 1:numel(bs)
+      varargout{ii} = bs(ii);
+    end
+  else
+    % Single output
+    varargout{1} = bs;
+  end
+end
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%                               Local Functions                               %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%--------------------------------------------------------------------------
+% Get Info Object
+%--------------------------------------------------------------------------
+function ii = getInfo(varargin)
+  
+  if nargin == 1 && strcmpi(varargin{1}, 'None')
+    sets = {};
+    pl   = [];
+  else
+    sets = {'Default'};
+    pl   = getDefaultPlist;
+  end
+  % Build info object
+  ii = minfo(mfilename, 'pzmodel', 'ltpda', utils.const.categories.helper, '$Id: setZeros.m,v 1.10 2011/08/15 12:02:36 hewitson Exp $', sets, pl);
+end
+
+%--------------------------------------------------------------------------
+% Get Default Plist
+%--------------------------------------------------------------------------
+function plout = getDefaultPlist()
+  persistent pl;  
+  if exist('pl', 'var')==0 || isempty(pl)
+    pl = buildplist();
+  end
+  plout = pl;  
+end
+
+function pl = buildplist()
+  pl = plist();
+  % Zeros
+  p = param({'zeros', 'A zero-array of the model.'}, paramValue.EMPTY_DOUBLE);
+  pl.append(p);
+end
+