| //+------------------------------------------------------------------+
|
| //| W_AD.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 "Larry Williams' Accumulation/Distribution"
|
| //--- indicator settings
|
| #property indicator_separate_window
|
| #property indicator_buffers 1
|
| #property indicator_plots 1
|
| #property indicator_type1 DRAW_LINE
|
| #property indicator_color1 clrLightSeaGreen
|
| //--- indicator buffer
|
| double ExtWADBuffer[];
|
| //+------------------------------------------------------------------+
|
| //| Custom indicator initialization function |
|
| //+------------------------------------------------------------------+
|
| void OnInit()
|
| {
|
| //--- define buffer
|
| SetIndexBuffer(0,ExtWADBuffer);
|
| //--- set draw begin
|
| PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,1);
|
| //--- indicator name
|
| IndicatorSetString(INDICATOR_SHORTNAME,"W_A/D");
|
| //--- round settings
|
| IndicatorSetInteger(INDICATOR_DIGITS,_Digits);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Custom indicator iteration function |
|
| //+------------------------------------------------------------------+
|
| int OnCalculate(const int rates_total,
|
| const int prev_calculated,
|
| const datetime &time[],
|
| const double &open[],
|
| const double &high[],
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| const double &low[],
|
| const double &close[],
|
| const long &tick_volume[],
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| const long &volume[],
|
| const int &spread[])
|
| {
|
| //---
|
| if(rates_total<2)
|
| return(0);
|
| //--- start working
|
| int pos=prev_calculated-1;
|
| if(pos<1)
|
| {
|
| pos=1;
|
| ExtWADBuffer[0]=0.0;
|
| }
|
| //--- main cycle
|
| for(int i=pos; i<rates_total && !IsStopped(); i++)
|
| {
|
| //--- get data
|
| double hi=high[i];
|
| double lo=low[i];
|
| double cl=close[i];
|
| double prev_cl=close[i-1];
|
| //--- calculate TRH and TRL
|
| double trh=MathMax(hi,prev_cl);
|
| double trl=MathMin(lo,prev_cl);
|
| //--- calculate WA/D
|
| if(IsEqualDoubles(cl,prev_cl,_Point))
|
| ExtWADBuffer[i]=ExtWADBuffer[i-1];
|
| else
|
| {
|
| if(cl>prev_cl)
|
| ExtWADBuffer[i]=ExtWADBuffer[i-1]+cl-trl;
|
| else
|
| ExtWADBuffer[i]=ExtWADBuffer[i-1]+cl-trh;
|
| }
|
| }
|
| //--- OnCalculate done. Return new prev_calculated.
|
| return(rates_total);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| |
|
| //+------------------------------------------------------------------+
|
| bool IsEqualDoubles(double d1,double d2,double epsilon)
|
| {
|
| if(epsilon<0.0)
|
| epsilon=-epsilon;
|
| if(epsilon>0.1)
|
| epsilon=0.00001;
|
| //---
|
| double diff=d1-d2;
|
| if(diff>epsilon || diff<-epsilon)
|
| return(false);
|
| //---
|
| return(true);
|
| }
|
| //+------------------------------------------------------------------+
|
