//+------------------------------------------------------------------+ //| Price_Channell.mq5 | //| Copyright 2009, MetaQuotes Software Corp. | //| http://www.mql5.com | //+------------------------------------------------------------------+ #property copyright "2009, MetaQuotes Software Corp." #property link "http://www.mql5.com" //--- 指标设置 #property indicator_chart_window #property indicator_buffers 3 #property indicator_plots 2 #property indicator_type1 DRAW_FILLING #property indicator_type2 DRAW_LINE #property indicator_color1 DodgerBlue,Gray #property indicator_color2 Blue #property indicator_label1 "Channel upper;Channel lower" #property indicator_label2 "Channel median" //--- 输入参数 input int InpChannelPeriod=22; // Period //--- 指标缓存 double ExtHighBuffer[]; double ExtLowBuffer[]; double ExtMiddBuffer[]; //+------------------------------------------------------------------+ //| 自定义指标初始化函数 | //+------------------------------------------------------------------+ void OnInit() { //--- 指标缓存映射 SetIndexBuffer(0,ExtHighBuffer,INDICATOR_DATA); SetIndexBuffer(1,ExtLowBuffer,INDICATOR_DATA); SetIndexBuffer(2,ExtMiddBuffer,INDICATOR_DATA); //--- 设置精度 IndicatorSetInteger(INDICATOR_DIGITS,_Digits); //--- set first bar from what index will be drawn PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpChannelPeriod); //---- 绘图时的线偏移 PlotIndexSetInteger(0,PLOT_SHIFT,1); PlotIndexSetInteger(1,PLOT_SHIFT,1); //--- name for DataWindow and indicator label IndicatorSetString(INDICATOR_SHORTNAME,"Price Channel("+string(InpChannelPeriod)+")"); PlotIndexSetString(0,PLOT_LABEL,"Channel("+string(InpChannelPeriod)+") upper;Channel("+string(InpChannelPeriod)+") lower"); PlotIndexSetString(1,PLOT_LABEL,"Median("+string(InpChannelPeriod)+")"); //--- set drawing line empty value PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0.0); PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,0.0); //--- 初始化结束 } //+------------------------------------------------------------------+ //| get highest value for range | //+------------------------------------------------------------------+ double Highest(const double &array[],int range,int fromIndex) { double res; int i; //--- res=array[fromIndex]; for(i=fromIndex;i>fromIndex-range && i>=0;i--) { if(resfromIndex-range && i>=0;i--) { if(res>array[i]) res=array[i]; } //--- return(res); } //+------------------------------------------------------------------+ //| Price Channell | //+------------------------------------------------------------------+ int OnCalculate(const int rates_total,const int prev_calculated, const datetime &Time[], const double &Open[], const double &High[], const double &Low[], const double &Close[], const long &TickVolume[], const long &Volume[], const int &Spread[]) { int i,limit; //--- check for rates if(rates_total