TRIX in EasyLanguage — TradeStation & MultiCharts

TRIX in EasyLanguage is three chained XAverage calls plus a rate of change. See the explainer for the concept.

What you’ll need

• TradeStation or MultiCharts
• The EasyLanguage / PowerLanguage Editor, new Indicator

The source

{ AlgoGen TRIX — TradeStation / MultiCharts }
inputs:
    Length( 15 ),
    SignalLen( 9 );

variables:
    E1( 0 ), E2( 0 ), E3( 0 ), TrixVal( 0 ), SignalVal( 0 );

E1 = XAverage( Close, Length );
E2 = XAverage( E1, Length );
E3 = XAverage( E2, Length );      { triple exponential }

if E3[1] <> 0 then
    TrixVal = 100 * ( E3 - E3[1] ) / E3[1]
else
    TrixVal = 0;

SignalVal = XAverage( TrixVal, SignalLen );

Plot1( TrixVal, "TRIX" );
Plot2( SignalVal, "Signal" );
Plot3( 0, "Zero" );

XAverage is EasyLanguage’s EMA; chaining it three times gives the triple smoothing, and 100 * (E3 - E3[1]) / E3[1] is the one-bar rate of change — the two lines from the output chart.

Signals

if TrixVal crosses over SignalVal then Alert( "TRIX bullish cross" );
if TrixVal crosses over 0 then Alert( "TRIX crossed above zero" );

Wrap it in a Strategy to backtest the crosses:

{ AlgoGen TRIX Cross — Strategy }
inputs: Length( 15 ), SignalLen( 9 );
variables: E1( 0 ), E2( 0 ), E3( 0 ), TrixVal( 0 ), SignalVal( 0 );
E1 = XAverage( Close, Length ); E2 = XAverage( E1, Length ); E3 = XAverage( E2, Length );
if E3[1] <> 0 then TrixVal = 100 * ( E3 - E3[1] ) / E3[1];
SignalVal = XAverage( TrixVal, SignalLen );

if TrixVal crosses over SignalVal then Buy next bar at market;
if TrixVal crosses under SignalVal then Sell next bar at market;

Because TRIX is heavily smoothed, expect fewer trades than a fast oscillator — the Strategy Performance Report will confirm the trade-off between lag and cleanliness.

Gotchas

• Chain the averages. E2 = XAverage( E1, Length ), not XAverage( Close, ...) again — each smoothing feeds the next.
• XAverage, not Average. TRIX is triple exponential; the simple Average would give a different indicator.
• ROC last. Take the rate of change of the third average, after all three smoothings.

Same indicator elsewhere: Python, MQL5, Pine Script, NinjaScript. Then backtest it in AlgoGen.

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This post is educational, not financial advice. Indicators describe the past; they don’t predict the future. Backtest anything before you risk real money on it.