--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@matrix/fftfilt.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,129 @@
+% FFTFILT fft filter for matrix objects
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: FFTFILT fft filter for matrix objects
+%
+% CALL:        output = fftfilt(input,filter)
+%
+% <a href="matlab:utils.helper.displayMethodInfo('matrix', 'fftfilt')">Parameters Description</a>
+%
+% VERSION:     $Id: fftfilt.m,v 1.16 2011/04/08 08:56:31 hewitson Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+function varargout = fftfilt(varargin)
+  
+  % utils.helper.msg(msg.PROC3, 'running %s/%s', mfilename('class'), mfilename);
+  
+  % Check if this is a call for parameters
+  if utils.helper.isinfocall(varargin{:})
+    varargout{1} = getInfo(varargin{3});
+    return
+  end
+  
+  % 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, matrix_invars, rest] = utils.helper.collect_objects(varargin(:), 'matrix', in_names);
+  [pl, pl_invars, rest]     = utils.helper.collect_objects(varargin(:), 'plist', in_names);
+  
+  % Merge with default plist
+  pl = parse(pl, getDefaultPlist);
+  
+  % separate data and filter matrices
+  is = varargin{1};
+  filt = varargin{2};
+  
+  [rw1,cl1] = size(filt.objs); % size filter
+  [rw2,cl2] = size(is.objs); % size input signals
+  % consistency check
+  if (cl1 ~= rw2)
+    error('!!! Matrices inner dimensions must agree')
+  end
+  
+  % init output
+  nobjs = feval(sprintf('%s.initObjectWithSize', class(is.objs(1))), rw1, cl2);
+  os = matrix(nobjs,plist('shape',[rw1,cl2]));
+  
+  % get number of Bins for zero padding
+  Npad = find(pl,'Npad');
+  % do row by colum product
+  for kk = 1:rw1
+    for jj = 1:cl2
+      % fix the first element of the sum
+      try % try to do filter
+        tobj = fftfilt_core(copy(is.objs(1,jj),1), copy(filt.objs(kk,1),1), Npad);
+      catch ME %  if the input ao is empty, ao/filter output an error and tobj is set to []
+        tobj = [];
+      end
+      for zz = 2:cl1
+        try % try to do filter
+          if isempty(tobj)
+            tobj = fftfilt_core(copy(is.objs(zz,jj),1), copy(filt.objs(kk,zz),1), Npad);
+          else
+            tobj = tobj + fftfilt_core(copy(is.objs(zz,jj),1), copy(filt.objs(kk,zz),1), Npad);
+          end
+        catch ME %  if the input ao is empty, ao/filter output an error
+        end
+      end
+      % simplify y units
+      tobj_yu = tobj.yunits;
+      tobj_yu.simplify;
+      tobj.setYunits(tobj_yu);
+      % simplify x units
+      if ~isempty(tobj.xunits)
+        tobj_xu = tobj.xunits;
+        tobj_xu.simplify;
+        tobj.setXunits(tobj_xu);
+      end
+      os.objs(kk,jj) = tobj;
+    end
+  end
+  
+  if nargout == 1
+    varargout{1} = os;
+  else
+    error('Set at least one output value')
+  end
+  
+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, 'matrix', 'ltpda', utils.const.categories.op, '$Id: fftfilt.m,v 1.16 2011/04/08 08:56:31 hewitson Exp $', sets, pls);
+  ii.setModifier(false);
+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();
+  
+  % Number of bins for zero padding
+  p = param({'Npad', 'Number of bins for zero padding.'}, paramValue.EMPTY_DOUBLE);
+  pl.append(p);
+  
+end