--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@ao/integrate.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,136 @@
+% INTEGRATE integrates the data in AO.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: INTEGRATE integrates the data in AO. The result is a single
+%              valued AO.
+%
+% CALL:        bs = integrate(a1,a2,a3,...,pl)
+%              bs = integrate(as,pl)
+%              bs = as.integrate(pl)
+%
+% INPUTS:      aN   - input analysis objects
+%              as   - input analysis objects array
+%              pl   - input parameter list
+%
+% OUTPUTS:     bs   - array of analysis objects, one for each input,
+%                     containing the integrate data
+%
+% <a href="matlab:utils.helper.displayMethodInfo('ao', 'integrate')">Parameters Description</a>
+%
+% VERSION:     $Id: integrate.m,v 1.11 2011/04/08 08:56:11 hewitson Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function varargout = integrate(varargin)
+  
+  % Check if this is a call for parameters
+  if utils.helper.isinfocall(varargin{:})
+    varargout{1} = getInfo(varargin{3});
+    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 and plists
+  [as, ao_invars] = utils.helper.collect_objects(varargin(:), 'ao', in_names);
+  pl              = utils.helper.collect_objects(varargin(:), 'plist', in_names);
+  
+  % Decide on a deep copy or a modify
+  bs = copy(as, nargout);
+  
+  % combine plists
+  pl = parse(pl, getDefaultPlist());
+  
+
+  % Extract method
+  method = find(pl, 'method');
+  
+  for jj = 1:numel(bs)
+    
+    % Diff can't work for cdata objects since we need x data
+    if isa(bs(jj).data, 'cdata')
+    end
+    
+    % Compute derivative with selected method
+    yu = bs(jj).data.yunits;
+    switch lower(method)
+      case 'trapezoidal'
+        if isa(bs(jj).data, 'cdata')
+          y      = bs(jj).data.getY;
+          bs(jj).data = cdata(trapz(y));
+        else
+          x      = bs(jj).data.getX;
+          y      = bs(jj).data.getY;
+          bs(jj).data = cdata(trapz(x,y));
+        end
+        bs(jj).setYunits(yu);
+      otherwise
+        error('### Unknown method for computing the derivative.');
+    end
+    
+
+    % name for this object
+    bs(jj).name = sprintf('integrate(%s)', ao_invars{jj});
+    % add history
+    bs(jj).addHistory(getInfo('None'), pl, ao_invars(jj), bs(jj).hist);
+  end
+  
+  % clear errors
+  bs.clearErrors;
+  
+  % 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
+
+%--------------------------------------------------------------------------
+% 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.sigproc, '$Id: integrate.m,v 1.11 2011/04/08 08:56:11 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();
+  
+  % Method
+  p = param({'method',['The method to use. Choose between:<ul>', ...
+    '<li>''Trapezoidal'' - integration using MATLAB''s trapz function</li>', ...
+    '</ul>' ...
+    ]},  {1, {'Trapezoidal'}, paramValue.SINGLE});
+  pl.append(p);
+  
+end
+