{== START OF HEADER ==========================================================================

Program:  TSI Function
Date:     October 2011
Platform: EasyLanguage v9.0

DESCRIPTION:

This function computes the Trend Strength (TSI) based upon a given Short lookback period
and a long lookback period. A TSI score above 1.60 is often considered a strong trend.

For more information see: http://www.systemtradersuccess.com

== END OF HEADER =============================================================================

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Copyright � 2011. Capital Evolution, LLC. All Rights Reserved.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

== DEFINE ALL INPUTS AND VARIABLES ==========================================================}

Input:
ShortLookback( NumericSimple  ),
LongLookback( NumericSimple  );
   
Variables: 
Ratio(0);

Ratio = AbsValue((close - close[ShortLookback])) / AvgTrueRange( ShortLookback );
TSI = Average(Average(Ratio,ShortLookback),LongLookback);

{== END OF MAIN PROGRAM =====================================================================
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Copyright � 2009-2011. Capital Evolution, LLC. All Rights Reserved.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++}