124 lines
4.0 KiB
Plaintext
124 lines
4.0 KiB
Plaintext
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//+------------------------------------------------------------------+
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//| Momentum.mq5 |
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//| Copyright 2009, MetaQuotes Software Corp. |
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//| http://www.mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "2009, MetaQuotes Software Corp."
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#property link "http://www.mql5.com"
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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_plots 1
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 DodgerBlue
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//---- input parameters
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input int InpMomentumPeriod=14; // Period
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input ENUM_APPLIED_PRICE InpApplyToPrice= PRICE_CLOSE; // Apply to
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//---- indicator buffers
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double ExtMomentumBuffer[];
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//--- global variable
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int ExtMomentumPeriod;
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//
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//
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//
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#include <AZ-INVEST/SDK/RangeBarIndicator.mqh>
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RangeBarIndicator customChartIndicator;
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//
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//
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//
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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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//
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// Indicator uses Price[] array for calculations so we need to set this in the MedianRenkoIndicator class
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//
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customChartIndicator.SetUseAppliedPriceFlag(InpApplyToPrice);
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//
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//
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//
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//--- check for input value
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if(InpMomentumPeriod<0)
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{
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ExtMomentumPeriod=14;
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Print("Input parameter InpMomentumPeriod has wrong value. Indicator will use value ",ExtMomentumPeriod);
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}
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else ExtMomentumPeriod=InpMomentumPeriod;
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//---- buffers
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SetIndexBuffer(0,ExtMomentumBuffer,INDICATOR_DATA);
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//---- name for DataWindow and indicator subwindow label
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IndicatorSetString(INDICATOR_SHORTNAME,"Momentum"+"("+string(ExtMomentumPeriod)+")");
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//--- sets first bar from what index will be drawn
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PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,ExtMomentumPeriod-1);
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//--- sets drawing line empty value
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PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0.0);
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//--- digits
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IndicatorSetInteger(INDICATOR_DIGITS,2);
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}
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//+------------------------------------------------------------------+
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//| Momentum |
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//+------------------------------------------------------------------+
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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 int begin,
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const double &price[])
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{
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*/
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int OnCalculate(const int rates_total,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 &TickVolume[],
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const long &Volume[],
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const int &Spread[])
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{
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static int begin = 0;
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//
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if(!customChartIndicator.OnCalculate(rates_total,prev_calculated,Time,Close))
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return(0);
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if(!customChartIndicator.BufferSynchronizationCheck(Close))
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return(0);
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int _prev_calculated = customChartIndicator.GetPrevCalculated();
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//
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//--- start calculation
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int StartCalcPosition=(ExtMomentumPeriod-1)+begin;
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//---- insufficient data
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if(rates_total<StartCalcPosition)
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return(0);
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//--- correct draw begin
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if(begin>0) PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,StartCalcPosition+(ExtMomentumPeriod-1));
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//--- start working, detect position
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int pos=_prev_calculated-1;
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if(pos<StartCalcPosition)
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pos=begin+ExtMomentumPeriod;
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//--- main cycle
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for(int i=pos;i<rates_total && !IsStopped();i++)
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{
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if(customChartIndicator.Price[i-ExtMomentumPeriod] > 0)
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ExtMomentumBuffer[i]=customChartIndicator.Price[i]*100/customChartIndicator.Price[i-ExtMomentumPeriod];
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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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