--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@ao/rms.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,119 @@
+% RMS Calculate RMS deviation from spectrum
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: RMS Calculate RMS deviation from spectrum
+%
+% CALL:        b=rms(a)
+%
+% INPUTS:      a  - input analysis object containing spectrum
+%
+% OUTPUTS:     b  - analysis object containing RMS deviation
+%
+% <a href="matlab:utils.helper.displayMethodInfo('ao', 'rms')">Parameters Description</a>
+%
+% VERSION:     $Id: rms.m,v 1.22 2011/04/08 08:56:11 hewitson Exp $
+%
+% NOTE:        Taken from code by: 1998.05.25      Masaki Ando
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function varargout = rms(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);
+
+  % Decide on a deep copy or a modify
+  bs = copy(as, nargout);
+
+  % Loop over input AOs
+  for j=1:numel(bs)
+    % check input data
+    if isa(bs(j).data, 'fsdata')
+      % get data
+      f = bs(j).data.getX;
+      spe = [f bs(j).data.getY];
+      % start and end frequencies
+      s = f(1);
+      e = f(end);
+      % compute integrated rms
+      l1=spe(:,1)>=s;
+      sp=spe(l1,:);
+      l2=sp(:,1)<=e;
+      sp=sp(l2,:);
+      si=size(sp);
+      li=si(1,1);
+      freq=sp(:,1);
+      sp2=sp(:,2).^2;
+      ms=sp2;
+      for i= li-1 :-1: 1
+        ms(i)=ms(i+1)+(sp2(i+1)+sp2(i))*(freq(i+1)-freq(i))/2;
+      end
+      % set data
+      bs(j).data.setXY(freq, sqrt(ms));
+      % set name
+      bs(j).name = sprintf('RMS(%s)', ao_invars{j});
+      % Add history
+      bs(j).addHistory(getInfo('None'), plist, ao_invars(j), bs(j).hist);
+      % clear errors
+      bs(j).clearErrors;
+    else
+      warning('!!! Skipping AO %s - it''s not an frequency series.', ao_invars{j});
+    end
+  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
+
+%--------------------------------------------------------------------------
+% 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: rms.m,v 1.22 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.EMPTY_PLIST;
+end
+% END
+