| //+------------------------------------------------------------------+
|
| //| Price_Channell.mq5 |
|
| //| Copyright 2000-2025, MetaQuotes Ltd. |
|
| //| https://www.mql5.com |
|
| //+------------------------------------------------------------------+
|
| #property copyright "Copyright 2000-2025, MetaQuotes Ltd."
|
| #property link "https://www.mql5.com"
|
| //--- indicator settings
|
| #property indicator_chart_window
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| #property indicator_buffers 3
|
| #property indicator_plots 2
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| #property indicator_type1 DRAW_FILLING
|
| #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"
|
| //--- input parameters
|
| input int InpChannelPeriod=22; // Period
|
| //--- indicator buffers
|
| double ExtHighBuffer[];
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| double ExtLowBuffer[];
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| double ExtMiddBuffer[];
|
| //+------------------------------------------------------------------+
|
| //| Custom indicator initialization function |
|
| //+------------------------------------------------------------------+
|
| void OnInit()
|
| {
|
| //--- indicator buffers mapping
|
| SetIndexBuffer(0,ExtHighBuffer,INDICATOR_DATA);
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| SetIndexBuffer(1,ExtLowBuffer,INDICATOR_DATA);
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| SetIndexBuffer(2,ExtMiddBuffer,INDICATOR_DATA);
|
| //--- 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);
|
| //--- 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);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| Price Channell |
|
| //+------------------------------------------------------------------+
|
| 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 &tick_volume[],
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| const long &volume[],
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| const int &spread[])
|
| {
|
| if(rates_total<InpChannelPeriod)
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| return(0);
|
|
|
| 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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| 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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| //--- OnCalculate done. Return new prev_calculated.
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| return(rates_total);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| get highest value for range |
|
| //+------------------------------------------------------------------+
|
| double Highest(const double& array[],const int range,const int from_index)
|
| {
|
| 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);
|
| }
|
| //+------------------------------------------------------------------+
|
| //| get lowest value for range |
|
| //+------------------------------------------------------------------+
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| double Lowest(const double& array[],const int range,const int from_index)
|
| {
|
| 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);
|
| }
|
| //+------------------------------------------------------------------+
|
