% BUILDSIGNAL builds the described signals
% 
% M Hewitson
% 
% $Id: buildSignal.m,v 1.1 2008/10/19 11:42:40 hewitson Exp $
% 
function obj = buildSignal(mainfig)
  
  th = findobj(mainfig.handle, 'Tag', 'JoinTypeSelect');
  jtype = get(th, 'String');
  jtype = jtype{get(th, 'Value')};
  
  lh = findobj(mainfig.handle, 'Tag', 'sigBuilderSignalList');
  
  % Get active rows
  rdata = get(lh, 'Data');  
  sigs = mainfig.signals([rdata{:,5}]);  
  % Join the signal
  obj = feval(jtype, sigs);
  
end