106 lines
4.3 KiB
MQL5
106 lines
4.3 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| Price_Channell.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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//--- indicator settings
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#property indicator_chart_window
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#property indicator_buffers 3
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#property indicator_plots 2
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#property indicator_type1 DRAW_FILLING
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#property indicator_type2 DRAW_LINE
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#property indicator_color1 clrDodgerBlue,clrGray
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#property indicator_color2 clrBlue
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#property indicator_label1 "Channel upper;Channel lower"
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#property indicator_label2 "Channel median"
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//--- input parameters
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input int InpChannelPeriod=22; // Period
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//--- indicator buffers
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double ExtHighBuffer[];
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double ExtLowBuffer[];
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double ExtMiddBuffer[];
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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,ExtHighBuffer,INDICATOR_DATA);
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SetIndexBuffer(1,ExtLowBuffer,INDICATOR_DATA);
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SetIndexBuffer(2,ExtMiddBuffer,INDICATOR_DATA);
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//--- set accuracy
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IndicatorSetInteger(INDICATOR_DIGITS,_Digits);
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//--- set first bar from what index will be drawn
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PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpChannelPeriod);
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//--- line shifts when drawing
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PlotIndexSetInteger(0,PLOT_SHIFT,1);
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PlotIndexSetInteger(1,PLOT_SHIFT,1);
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//--- name for DataWindow and indicator label
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string short_name=StringFormat("Price Channel(%d)",InpChannelPeriod);
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IndicatorSetString(INDICATOR_SHORTNAME,short_name);
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short_name=StringFormat("Channel(%d) upper;Channel(%d) lower",InpChannelPeriod,InpChannelPeriod);
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PlotIndexSetString(0,PLOT_LABEL,short_name);
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short_name=StringFormat("Median(%d)",InpChannelPeriod);
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PlotIndexSetString(1,PLOT_LABEL,short_name);
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//--- set drawing line empty value
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PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0.0);
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PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,0.0);
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}
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//+------------------------------------------------------------------+
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//| Price Channell |
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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<InpChannelPeriod)
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return(0);
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int start;
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//--- preliminary calculations
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if(prev_calculated==0)
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start=InpChannelPeriod;
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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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{
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ExtHighBuffer[i]=Highest(high,InpChannelPeriod,i);
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ExtLowBuffer[i]=Lowest(low,InpChannelPeriod,i);
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ExtMiddBuffer[i]=(ExtHighBuffer[i]+ExtLowBuffer[i])/2.0;;
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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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//| get highest value for range |
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//+------------------------------------------------------------------+
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double Highest(const double& array[],const int range,const int from_index)
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{
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double res=array[from_index];
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for(int i=from_index-1; i>from_index-range && i>=0; i--)
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if(res<array[i])
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res=array[i];
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return(res);
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}
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//+------------------------------------------------------------------+
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//| get lowest value for range |
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//+------------------------------------------------------------------+
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double Lowest(const double& array[],const int range,const int from_index)
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{
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double res=array[from_index];
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for(int i=from_index-1; i>from_index-range && i>=0; i--)
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if(res>array[i])
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res=array[i];
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return(res);
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}
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//+------------------------------------------------------------------+
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