193 lines
14 KiB
Plaintext
193 lines
14 KiB
Plaintext
//+------------------------------------------------------------------+
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//| APR.mq5 |
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//| Copyright 2018, MetaQuotes Software Corp. |
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//| https://mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2018, MetaQuotes Software Corp."
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#property link "https://mql5.com"
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#property version "1.00"
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#property description "Average Period Range"
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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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//--- plot APR
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#property indicator_label1 "APR"
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 clrRed
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#property indicator_style1 STYLE_SOLID
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#property indicator_width1 1
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//--- enums
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enum ENUM_CALC_PRICE
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{
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PRICE_HL, // High/Low
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PRICE_OC // Open/Close
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};
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enum ENUM_CALC_MODE
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{
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MODE_ABSOLUTE, // Absolute
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MODE_RELATIVE // Relative
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};
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//--- input parameters
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input ENUM_TIMEFRAMES InpTimeframe = PERIOD_D1; // Timeframe
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input uint InpPeriod = 5; // Period
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input ENUM_CALC_PRICE InpCalcPrice = PRICE_HL; // Applied price
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input ENUM_CALC_MODE InpCalcMode = MODE_ABSOLUTE; // Calculation mode
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//--- indicator buffers
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double BufferAPR[];
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//--- global variables
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int period;
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function |
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//+------------------------------------------------------------------+
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int OnInit()
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{
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//--- set global variables
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period=int(InpPeriod<1 ? 1 : InpPeriod);
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//--- indicator buffers mapping
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SetIndexBuffer(0,BufferAPR,INDICATOR_DATA);
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//--- setting indicator parameters
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IndicatorSetString(INDICATOR_SHORTNAME,"APR("+(string)period+")");
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IndicatorSetInteger(INDICATOR_DIGITS,Digits());
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//--- setting buffer arrays as timeseries
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ArraySetAsSeries(BufferAPR,true);
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//---
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return(INIT_SUCCEEDED);
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}
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//+------------------------------------------------------------------+
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//| Custom indicator iteration function |
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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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//--- Проверка на минимальное колиество баров для расчёта
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if(rates_total<period) return 0;
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//--- Установка массивов буферов как таймсерий
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ArraySetAsSeries(time,true);
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//--- Проверка и расчёт количества просчитываемых баров
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int limit=rates_total-prev_calculated;
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if(limit>1)
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{
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limit=rates_total-period-2;
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ArrayInitialize(BufferAPR,EMPTY_VALUE);
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}
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//--- Расчёт индикатора
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for(int i=limit; i>=0 && !IsStopped(); i--)
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{
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int index=BarShift(Symbol(),InpTimeframe,time[i],false);
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if(index==WRONG_VALUE) return 0;
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double sum=0;
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for(int j=0; j<period; j++)
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{
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if(InpCalcPrice==PRICE_HL)
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{
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double h=High(InpTimeframe,index+j);
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double l=Low(InpTimeframe,index+j);
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if(h==0 || l==0) return 0;
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sum+=h-l;
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}
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else
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{
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double o=Open(InpTimeframe,index+j);
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double c=Close(InpTimeframe,index+j);
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if(o==0 || c==0) return 0;
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sum+=fabs(o-c);
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}
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}
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if(InpCalcMode==MODE_ABSOLUTE)
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{
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BufferAPR[i]=sum/period;
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}
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else
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{
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double opn=Open(InpTimeframe,index);
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if(opn==0) return 0;
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BufferAPR[i]=100*sum/(period*opn);
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}
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}
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//--- return value of prev_calculated for next call
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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//| Возвращает смещение бара по времени |
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//| https://www.mql5.com/ru/code/1864 |
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//+------------------------------------------------------------------+
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int BarShift(const string symbol_name,const ENUM_TIMEFRAMES timeframe,const datetime time,bool exact=false)
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{
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datetime last_bar;
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if(!SeriesInfoInteger(symbol_name,timeframe,SERIES_LASTBAR_DATE,last_bar))
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{
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datetime array[1];
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if(CopyTime(symbol_name,timeframe,0,1,array)==1)
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last_bar=array[0];
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else
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return WRONG_VALUE;
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}
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if(time>last_bar)
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return(0);
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int shift=Bars(symbol_name,timeframe,time,last_bar);
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datetime array[1];
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if(CopyTime(symbol_name,timeframe,time,1,array)==1)
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return(array[0]==time ? shift-1 : exact && time>array[0]+PeriodSeconds(timeframe) ? WRONG_VALUE : shift);
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return WRONG_VALUE;
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}
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//+------------------------------------------------------------------+
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//| Возвращает время указанного бара |
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//+------------------------------------------------------------------+
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datetime Time(const ENUM_TIMEFRAMES timeframe,const int index)
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{
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datetime array[];
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ArraySetAsSeries(array,true);
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if(CopyTime(Symbol(),timeframe,index,1,array)==1) return array[0];
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return 0;
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}
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//+------------------------------------------------------------------+
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//| Возвращает Open указанного бара |
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//+------------------------------------------------------------------+
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double Open(const ENUM_TIMEFRAMES timeframe,const int index)
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{
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double array[];
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ArraySetAsSeries(array,true);
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if(CopyOpen(Symbol(),timeframe,index,1,array)==1) return array[0];
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return 0;
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}
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//+------------------------------------------------------------------+
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//| Возвращает High указанного бара |
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//+------------------------------------------------------------------+
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double High(const ENUM_TIMEFRAMES timeframe,const int index)
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{
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double array[];
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ArraySetAsSeries(array,true);
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if(CopyHigh(Symbol(),timeframe,index,1,array)==1) return array[0];
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return 0;
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}
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//+------------------------------------------------------------------+
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//| Возвращает Low указанного бара |
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//+------------------------------------------------------------------+
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double Low(const ENUM_TIMEFRAMES timeframe,const int index)
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{
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double array[];
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ArraySetAsSeries(array,true);
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if(CopyLow(Symbol(),timeframe,index,1,array)==1) return array[0];
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return 0;
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}
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//+------------------------------------------------------------------+
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//| Возвращает Close указанного бара |
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//+------------------------------------------------------------------+
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double Close(const ENUM_TIMEFRAMES timeframe,const int index)
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{
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double array[];
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ArraySetAsSeries(array,true);
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if(CopyClose(Symbol(),timeframe,index,1,array)==1) return array[0];
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return 0;
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}
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//+------------------------------------------------------------------+
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