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//+------------------------------------------------------------------+
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//| Accumulation.mq4 |
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//| Copyright 2005-2014, MetaQuotes Software Corp. |
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//| http://www.mql4.com |
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//+------------------------------------------------------------------+
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#property copyright "2005-2014, MetaQuotes Software Corp."
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#property link "http://www.mql4.com"
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#property description "Accumulation/Distribution"
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#property strict
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//--- indicator settings
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#property indicator_separate_window
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#property indicator_buffers 1
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#property indicator_color1 LightSeaGreen
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//--- buffers
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double ExtADbuffer[];
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function |
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//+------------------------------------------------------------------+
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void OnInit(void)
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{
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IndicatorShortName("A/D");
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IndicatorDigits(0);
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//--- indicators
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SetIndexStyle(0,DRAW_LINE);
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SetIndexBuffer(0,ExtADbuffer);
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}
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//+------------------------------------------------------------------+
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//| Accumulation/Distribution |
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//+------------------------------------------------------------------+
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int OnCalculate(const int rates_total,
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const int prev_calculated,
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const datetime &time[],
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const double &open[],
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const double &high[],
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const double &low[],
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const double &close[],
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const long &tick_volume[],
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const long &volume[],
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const int &spread[])
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{
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//--- prevent total recalculation
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int i=rates_total-prev_calculated-1;
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//--- current value should be recalculated
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if(i<0)
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i=0;
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//---
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while(i>=0)
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{
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ExtADbuffer[i]=(close[i]-low[i])-(high[i]-close[i]);
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if(ExtADbuffer[i]!=0.0)
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{
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double diff=high[i]-low[i];
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if(diff<0.000000001)
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ExtADbuffer[i]=0.0;
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else
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{
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ExtADbuffer[i]/=diff;
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ExtADbuffer[i]*=(double)tick_volume[i];
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}
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}
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if(i<rates_total-1)
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ExtADbuffer[i]+=ExtADbuffer[i+1];
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i--;
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}
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//---
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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