| //+------------------------------------------------------------------+
|
| //| TRIX.mq5 |
|
| //| Copyright 2000-2025, MetaQuotes Ltd. |
|
| //| https://www.mql5.com |
|
| //+------------------------------------------------------------------+
|
| #property copyright "Copyright 2000-2025, MetaQuotes Ltd."
|
| #property link "https://www.mql5.com"
|
| #property description "Triple Exponential Average"
|
| #include <MovingAverages.mqh>
|
| //--- indicator settings
|
| #property indicator_separate_window
|
| #property indicator_buffers 4
|
| #property indicator_plots 1
|
| #property indicator_type1 DRAW_LINE
|
| #property indicator_color1 clrRed
|
| #property indicator_width1 1
|
| #property indicator_label1 "TRIX"
|
| #property indicator_applied_price PRICE_CLOSE
|
| //--- input parameters
|
| input int InpPeriodEMA=14; // EMA period
|
| //--- indicator buffers
|
| double TRIX_Buffer[];
|
| double EMA[];
|
| double SecondEMA[];
|
| double ThirdEMA[];
|
| //+------------------------------------------------------------------+
|
| //| Custom indicator initialization function |
|
| //+------------------------------------------------------------------+
|
| void OnInit()
|
| {
|
| //--- indicator buffers mapping
|
| SetIndexBuffer(0,TRIX_Buffer,INDICATOR_DATA);
|
| SetIndexBuffer(1,EMA,INDICATOR_CALCULATIONS);
|
| SetIndexBuffer(2,SecondEMA,INDICATOR_CALCULATIONS);
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| SetIndexBuffer(3,ThirdEMA,INDICATOR_CALCULATIONS);
|
| //--- sets first bar from what index will be drawn
|
| PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,3*InpPeriodEMA-3);
|
| //--- name for index label
|
| string short_name=StringFormat("TRIX(%d)",InpPeriodEMA);
|
| IndicatorSetString(INDICATOR_SHORTNAME,short_name);
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| PlotIndexSetString(0,PLOT_LABEL,short_name);
|
| //--- indicator digits
|
| IndicatorSetInteger(INDICATOR_DIGITS,5);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Triple Exponential Average |
|
| //+------------------------------------------------------------------+
|
| int OnCalculate(const int rates_total,
|
| const int prev_calculated,
|
| const int begin,
|
| const double &price[])
|
| {
|
| if(rates_total<3*InpPeriodEMA-3)
|
| return(0);
|
| //---
|
| int start;
|
| if(prev_calculated==0)
|
| {
|
| start=3*(InpPeriodEMA-1);
|
| for(int i=0; i<start; i++)
|
| TRIX_Buffer[i]=EMPTY_VALUE;
|
| }
|
| else
|
| start=prev_calculated-1;
|
| //--- calculate EMA
|
| ExponentialMAOnBuffer(rates_total,prev_calculated,0,InpPeriodEMA,price,EMA);
|
| //--- calculate EMA on EMA array
|
| ExponentialMAOnBuffer(rates_total,prev_calculated,InpPeriodEMA-1,InpPeriodEMA,EMA,SecondEMA);
|
| //--- calculate EMA on EMA array on EMA array
|
| ExponentialMAOnBuffer(rates_total,prev_calculated,2*InpPeriodEMA-2,InpPeriodEMA,SecondEMA,ThirdEMA);
|
| //--- calculate TRIX
|
| for(int i=start; i<rates_total && !IsStopped(); i++)
|
| {
|
| if(ThirdEMA[i-1]!=0.0)
|
| TRIX_Buffer[i]=(ThirdEMA[i]-ThirdEMA[i-1])/ThirdEMA[i-1];
|
| else
|
| TRIX_Buffer[i]=0.0;
|
| }
|
| //--- OnCalculate done. Return new prev_calculated.
|
| return(rates_total);
|
| }
|
| //+------------------------------------------------------------------+
|
