//+------------------------------------------------------------------+ //| Envelopes.mq5 | //| Copyright 2009-2017, MetaQuotes Software Corp. | //| http://www.mql5.com | //+------------------------------------------------------------------+ #property copyright "2009-2017, MetaQuotes Software Corp." #property link "http://www.mql5.com" //--- indicator settings #property indicator_chart_window #property indicator_buffers 3 #property indicator_plots 2 #property indicator_type1 DRAW_LINE #property indicator_type2 DRAW_LINE #property indicator_color1 Blue #property indicator_color2 Red #property indicator_label1 "Upper band" #property indicator_label2 "Lower band" //--- input parameters input int InpMAPeriod=14; // Period input int InpMAShift=0; // Shift input ENUM_MA_METHOD InpMAMethod=MODE_SMA; // Method input ENUM_APPLIED_PRICE InpAppliedPrice=PRICE_CLOSE; // Applied price input double InpDeviation=0.1; // Deviation //--- indicator buffers double ExtUpBuffer[]; double ExtDownBuffer[]; double ExtMABuffer[]; //--- MA handle int ExtMAHandle; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ void OnInit() { //--- indicator buffers mapping SetIndexBuffer(0,ExtUpBuffer,INDICATOR_DATA); SetIndexBuffer(1,ExtDownBuffer,INDICATOR_DATA); SetIndexBuffer(2,ExtMABuffer,INDICATOR_CALCULATIONS); //--- IndicatorSetInteger(INDICATOR_DIGITS,_Digits+1); //--- sets first bar from what index will be drawn PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpMAPeriod-1); //--- name for DataWindow IndicatorSetString(INDICATOR_SHORTNAME,"Env("+string(InpMAPeriod)+")"); PlotIndexSetString(0,PLOT_LABEL,"Env("+string(InpMAPeriod)+")Upper"); PlotIndexSetString(1,PLOT_LABEL,"Env("+string(InpMAPeriod)+")Lower"); //---- line shifts when drawing PlotIndexSetInteger(0,PLOT_SHIFT,InpMAShift); PlotIndexSetInteger(1,PLOT_SHIFT,InpMAShift); //--- ExtMAHandle=iMA(NULL,0,InpMAPeriod,0,InpMAMethod,InpAppliedPrice); //--- initialization done } //+------------------------------------------------------------------+ //| Envelopes | //+------------------------------------------------------------------+ 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 &tick_volume[], const long &volume[], const int &spread[]) { int i,limit; //--- check for bars count if(rates_totalrates_total || prev_calculated<0) to_copy=rates_total; else { to_copy=rates_total-prev_calculated; if(prev_calculated>0) to_copy++; } //---- get ma buffer if(IsStopped()) return(0); //Checking for stop flag if(CopyBuffer(ExtMAHandle,0,0,to_copy,ExtMABuffer)<=0) { Print("Getting MA data is failed! Error",GetLastError()); return(0); } //--- preliminary calculations limit=prev_calculated-1; if(limit