94 lines
3.5 KiB
MQL5
94 lines
3.5 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| Bears.mq5 |
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//| Copyright 2000-2025, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2000-2025, MetaQuotes Ltd."
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#property link "https://www.mql5.com"
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#property description "Bears Power"
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//--- indicator settings
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#property indicator_separate_window
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#property indicator_buffers 2
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#property indicator_plots 1
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#property indicator_type1 DRAW_HISTOGRAM
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#property indicator_color1 clrSilver
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#property indicator_width1 2
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//--- input parameters
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input int InpBearsPeriod=13; // Period
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//--- indicator buffers
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double ExtBearsBuffer[];
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double ExtTempBuffer[];
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//--- handle of EMA
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int ExtEmaHandle;
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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,ExtBearsBuffer,INDICATOR_DATA);
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SetIndexBuffer(1,ExtTempBuffer,INDICATOR_CALCULATIONS);
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//---
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IndicatorSetInteger(INDICATOR_DIGITS,_Digits+1);
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//--- sets first bar from what index will be drawn
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PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpBearsPeriod-1);
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//--- name for DataWindow and indicator subwindow label
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string short_name=StringFormat("Bears(%d)",InpBearsPeriod);
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IndicatorSetString(INDICATOR_SHORTNAME,short_name);
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//--- get MA handle
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ExtEmaHandle=iMA(_Symbol,_Period,InpBearsPeriod,0,MODE_EMA,PRICE_CLOSE);
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}
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//+------------------------------------------------------------------+
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//| Average True Range |
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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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if(rates_total<InpBearsPeriod)
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return(0);
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//--- not all data may be calculated
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int calculated=BarsCalculated(ExtEmaHandle);
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if(calculated<rates_total)
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{
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Print("Not all data of ExtEmaHandle is calculated (",calculated," bars). Error ",GetLastError());
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return(0);
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}
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//--- we can copy not all data
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int to_copy;
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if(prev_calculated>rates_total || prev_calculated<0)
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to_copy=rates_total;
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else
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{
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to_copy=rates_total-prev_calculated;
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if(prev_calculated>0)
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to_copy++;
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}
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//--- get ma buffers
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if(IsStopped()) // checking for stop flag
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return(0);
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if(CopyBuffer(ExtEmaHandle,0,0,to_copy,ExtTempBuffer)<=0)
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{
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Print("getting ExtEmaHandle is failed! Error ",GetLastError());
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return(0);
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}
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//--- first calculation or number of bars was changed
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int start;
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if(prev_calculated<InpBearsPeriod)
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start=InpBearsPeriod;
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else
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start=prev_calculated-1;
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//--- the main loop of calculations
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for(int i=start; i<rates_total && !IsStopped(); i++)
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ExtBearsBuffer[i]=low[i]-ExtTempBuffer[i];
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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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