101 lines
3.9 KiB
Plaintext
101 lines
3.9 KiB
Plaintext
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//+------------------------------------------------------------------+
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//| DeMarker.mq5 |
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//| Copyright 2009-2017, MetaQuotes Software Corp. |
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//| http://www.mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "2009-2017, MetaQuotes Software Corp."
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#property link "http://www.mql5.com"
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#include <MovingAverages.mqh>
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//--- indicator settings
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#property indicator_separate_window
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#property indicator_buffers 5
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#property indicator_plots 1
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 DodgerBlue
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#property indicator_level1 0.3
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#property indicator_level2 0.7
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//--- input parameters
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input int InpDeMarkerPeriod=14; // Period
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//--- indicator buffers
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double ExtDeMarkerBuffer[];
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double ExtDeMaxBuffer[];
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double ExtDeMinBuffer[];
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double ExtAvgDeMaxBuffer[];
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double ExtAvgDeMinBuffer[];
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function |
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//+------------------------------------------------------------------+
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void OnInit()
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{
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//--- indicator buffers mapping
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SetIndexBuffer(0,ExtDeMarkerBuffer,INDICATOR_DATA);
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SetIndexBuffer(1,ExtDeMaxBuffer,INDICATOR_CALCULATIONS);
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SetIndexBuffer(2,ExtDeMinBuffer,INDICATOR_CALCULATIONS);
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SetIndexBuffer(3,ExtAvgDeMaxBuffer,INDICATOR_CALCULATIONS);
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SetIndexBuffer(4,ExtAvgDeMinBuffer,INDICATOR_CALCULATIONS);
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//--- set accuracy
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IndicatorSetInteger(INDICATOR_DIGITS,3);
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//--- sets first bar from what index will be drawn
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PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpDeMarkerPeriod);
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//--- name for DataWindow and indicator subwindow label
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IndicatorSetString(INDICATOR_SHORTNAME,"DeM("+string(InpDeMarkerPeriod)+")");
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//--- initialization done
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}
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//+------------------------------------------------------------------+
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//| DeMarker |
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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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int i,limit;
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double dNum;
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//--- check for bars count
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if(rates_total<InpDeMarkerPeriod)
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return(0);
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//--- preliminary calculations
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if(prev_calculated==0)
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{
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ExtDeMaxBuffer[0]=0.0;
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ExtDeMinBuffer[0]=0.0;
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//--- filling out the array of True Range values for each period
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for(i=1;i<InpDeMarkerPeriod;i++)
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{
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if(high[i]>high[i-1]) ExtDeMaxBuffer[i]=high[i]-high[i-1];
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else ExtDeMaxBuffer[i]=0.0;
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if(low[i-1]>low[i]) ExtDeMinBuffer[i]=low[i-1]-low[i];
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else ExtDeMinBuffer[i]=0.0;
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}
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for(i=0;i<InpDeMarkerPeriod;i++) ExtDeMarkerBuffer[i]=0.0;
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limit=InpDeMarkerPeriod-1;
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}
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else limit=prev_calculated-1;
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//--- the main loop of calculations
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for(i=limit;i<rates_total && !IsStopped();i++)
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{
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if(high[i]>high[i-1]) ExtDeMaxBuffer[i]=high[i]-high[i-1];
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else ExtDeMaxBuffer[i]=0.0;
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if(low[i-1]>low[i]) ExtDeMinBuffer[i]=low[i-1]-low[i];
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else ExtDeMinBuffer[i]=0.0;
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ExtAvgDeMaxBuffer[i]=SimpleMA(i,InpDeMarkerPeriod,ExtDeMaxBuffer);
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ExtAvgDeMinBuffer[i]=SimpleMA(i,InpDeMarkerPeriod,ExtDeMinBuffer);
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dNum=ExtAvgDeMaxBuffer[i]+ExtAvgDeMinBuffer[i];
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if(dNum!=0) ExtDeMarkerBuffer[i]=ExtAvgDeMaxBuffer[i]/dNum;
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else ExtDeMarkerBuffer[i]=0.0;
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}
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//--- OnCalculate done. Return new prev_calculated.
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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