void operator() ( const Bar &bar ) {
   ++cnt;
   double t = cnt;
   rsUpper.Add( t, bar.High() - bar.Open() );
   rsLower.Add( t, bar.Open() - bar.Low() );
 }
 void operator() ( const Bar &bar ) {
   //m_dblVolatility += ( bar.m_dblHigh - bar.m_dblLow ) / bar.m_dblClose;
   m_dblVolatility += ( bar.High() - bar.Low() ) ;
   ++m_nNumberOfValues;
 }