--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@collection/getObjectAtIndex.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,125 @@
+% GETOBJECTATINDEX index into the inner objects of one collection object.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: GETOBJECTATINDEX index into the inner objects of one
+%              collection object.
+%              This doesn't captures the history.
+%
+% CALL:        b = getObjectAtIndex(coll, i)
+%              b = getObjectAtIndex(coll, i, j)
+%              b = coll.getObjectAtIndex(plist('I', i))
+%              b = coll.getObjectAtIndex(plist('I', i, 'J', j))
+%
+% <a href="matlab:utils.helper.displayMethodInfo('collection', 'getObjectAtIndex')">Parameters Description</a>
+%
+% VERSION:     $Id: getObjectAtIndex.m,v 1.8 2011/04/08 08:56:21 hewitson Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function varargout = getObjectAtIndex(varargin)
+  
+  % Check if this is a call for parameters
+  if utils.helper.isinfocall(varargin{:})
+    varargout{1} = getInfo(varargin{3});
+    return
+  end
+  
+  if nargout == 0
+    error('### getObjectAtIndex cannot be used as a modifier. Please give an output variable.');
+  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 'ltpda_uoh' objects and plists
+  [cobjs, obj_invars, rest] = utils.helper.collect_objects(varargin(:), 'collection', in_names);
+  [pl, pl_invars, rest] = utils.helper.collect_objects(rest(:), 'plist', in_names);
+  
+  % Combine plists
+  pl = combine(pl, getDefaultPlist);
+  
+  % Get indices
+  idxi  = find(pl, 'i');
+  idxj  = find(pl, 'j');
+  if isempty(idxi) || isempty(idxj)
+    % go through the other inputs
+    for jj = 1:numel(rest)
+      if isnumeric(rest{jj}) && isempty(idxi)
+        idxi = rest{jj};
+      elseif isnumeric(rest{jj}) && isempty(idxj)
+        idxj = rest{jj};
+      end
+    end
+  end
+  
+  if isempty(idxi) && isempty(idxj)
+    error('### Please provide an index or an index pair.');
+  end
+  
+  % Now index with either (i) or (i,j)
+  if isempty(idxj)
+    if isa(cobjs.objs{idxi}, 'ltpda_obj')
+      aout = copy(cobjs.objs{idxi}, 1);
+    else
+      aout = cobjs.objs{idxi};
+    end
+    pl.pset('i', idxi);
+  else
+    if isa(cobjs.objs{idxi, idxj}, 'ltpda_obj')
+      aout = copy(cobjs.objs{idxi, idxj}, 1);
+    else
+      aout = cobjs.objs{idxi, idxj};
+    end
+    pl.pset('i', idxi);
+    pl.pset('j', idxj);
+  end
+  
+  aout.addHistory(getInfo('None'), pl, obj_invars(1), cobjs.hist);
+
+  % Set output
+  varargout{1} = aout;
+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, 'collection', 'ltpda', utils.const.categories.helper, '$Id: getObjectAtIndex.m,v 1.8 2011/04/08 08:56:21 hewitson Exp $', sets, pl);
+  ii.setModifier(false);
+end
+
+%--------------------------------------------------------------------------
+% Get Default Plist
+%--------------------------------------------------------------------------
+function plout = getDefaultPlist()
+  persistent pl;  
+  if ~exist('pl', 'var') || isempty(pl)
+    pl = buildplist();
+  end
+  plout = pl;  
+end
+
+function plo = buildplist()
+  
+  plo = plist();
+  
+  p = param({'I', 'The I index of the inner object vector or matrix.'}, paramValue.EMPTY_DOUBLE);
+  plo.append(p);
+  
+  p = param({'J', 'The J index of the inner object matrix.'}, paramValue.EMPTY_DOUBLE);
+  plo.append(p);
+  
+end
+