--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@ao/atan2.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,101 @@
+% ATAN2 overloads the atan2 operator for analysis objects. Four quadrant inverse tangent.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: ATAN2 overloads the atan2 operator for analysis objects.
+%              Four quadrant inverse tangent.
+%
+% REMARK:      The data-object of the output AO is the same as the data-object
+%              of the first AO input. The result of the atan2 will be copied to
+%              the y values of this data-object.
+%
+% CALL:        ao_out = atan2(ao1, ao2);
+%              ao_out = atan2(ao1, ao2);
+%              ao_out = atan2(ao_vec1, ao_vec2);
+%
+% <a href="matlab:utils.helper.displayMethodInfo('ao', 'atan2')">Parameters Description</a>
+%
+% VERSION:     $Id: atan2.m,v 1.18 2011/04/08 08:56:12 hewitson Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function varargout = atan2(varargin)
+  
+  callerIsMethod = utils.helper.callerIsMethod;
+  
+  operatorName   = 'atan2';
+  operatorSymbol = 'atan2';
+  
+  % Check if this is a call for parameters
+  if utils.helper.isinfocall(varargin{:})
+    varargout{1} = getInfo(varargin{3});
+    return
+  end
+
+  % Collect input aos and ao variable names
+  in_names = cell(size(varargin));
+  for ii = 1:nargin,in_names{ii} = inputname(ii);end
+
+  % Collect all AOs
+  [as, ao_invars] = utils.helper.collect_objects(varargin(:), 'ao', in_names);
+  
+  % Check output arguments number
+  if nargout == 0
+    error('### %s cannot be used as a modifier. Please give an output variable.', operatorName);
+  end  
+
+  % Check input arguments number
+  if length(as) ~= 2
+    error ('### Incorrect inputs for %s. Please enter 2 AOs', operatorName);
+  end
+
+  % Go for a deep copy
+  bs = copy(as, true);
+  
+  % Settings
+  if callerIsMethod
+    infoObj = [];
+    pl = plist;
+  else
+    infoObj = getInfo();
+    pl = getDefaultPlist;
+  end
+  
+  % Apply method and set output
+  varargout{1} = bs.applyoperator(callerIsMethod, ao_invars, operatorName, operatorSymbol, pl, infoObj);
+
+end
+
+%--------------------------------------------------------------------------
+% 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, 'ao', 'ltpda', utils.const.categories.trig, '$Id: atan2.m,v 1.18 2011/04/08 08:56:12 hewitson Exp $', sets, pl);
+  ii.setModifier(false);
+  ii.setArgsmin(2);
+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
+
+