//+------------------------------------------------------------------+ //| DBB.mq5 | //| Copyright 2018, MetaQuotes Software Corp. | //| https://mql5.com | //+------------------------------------------------------------------+ #property copyright "Copyright 2018, MetaQuotes Software Corp." #property link "https://mql5.com" #property version "1.00" #property description "Distance from Bollinger Band indicator" #property indicator_separate_window #property indicator_buffers 5 #property indicator_plots 2 //--- plot Top #property indicator_label1 "Top" #property indicator_type1 DRAW_LINE #property indicator_color1 clrRed #property indicator_style1 STYLE_SOLID #property indicator_width1 1 //--- plot Bottom #property indicator_label2 "Bottom" #property indicator_type2 DRAW_LINE #property indicator_color2 clrGreen #property indicator_style2 STYLE_SOLID #property indicator_width2 1 //--- enums enum ENUM_CALC_MODE { MODE_PRC, // Percentage MODE_PT // Price points }; //--- input parameters input uint InpPeriod = 20; // BB Period input double InpDeviation = 2.0; // BB Deviation input ENUM_APPLIED_PRICE InpAppliedPrice = PRICE_CLOSE; // Applied price input ENUM_CALC_MODE InpMode = MODE_PRC; // Display mode //--- indicator buffers double BufferTop[]; double BufferBottom[]; double BufferMA[]; double BufferBandsUP[]; double BufferBandsDN[]; //--- global variables double deviation; int period; int handle_ma; int handle_bb; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int OnInit() { //--- set global variables period=int(InpPeriod<1 ? 1 : InpPeriod); deviation=(InpDeviation==0 ? 0.01 : InpDeviation); //--- indicator buffers mapping SetIndexBuffer(0,BufferTop,INDICATOR_DATA); SetIndexBuffer(1,BufferBottom,INDICATOR_DATA); SetIndexBuffer(2,BufferMA,INDICATOR_CALCULATIONS); SetIndexBuffer(3,BufferBandsUP,INDICATOR_CALCULATIONS); SetIndexBuffer(4,BufferBandsDN,INDICATOR_CALCULATIONS); //--- setting indicator parameters IndicatorSetString(INDICATOR_SHORTNAME,"Distance from BB ("+(string)period+","+DoubleToString(deviation,2)+")"); IndicatorSetInteger(INDICATOR_DIGITS,Digits()); //--- setting buffer arrays as timeseries ArraySetAsSeries(BufferTop,true); ArraySetAsSeries(BufferBottom,true); ArraySetAsSeries(BufferMA,true); ArraySetAsSeries(BufferBandsUP,true); ArraySetAsSeries(BufferBandsDN,true); //--- create MA's handles ResetLastError(); handle_ma=iMA(NULL,PERIOD_CURRENT,1,0,MODE_SMA,InpAppliedPrice); if(handle_ma==INVALID_HANDLE) { Print("The iMA(1) object was not created: Error ",GetLastError()); return INIT_FAILED; } handle_bb=iBands(NULL,PERIOD_CURRENT,period,0,deviation,InpAppliedPrice); if(handle_bb==INVALID_HANDLE) { Print("The iBands(",(string)period,",",DoubleToString(deviation,2),") object was not created: Error ",GetLastError()); return INIT_FAILED; } //--- return(INIT_SUCCEEDED); } //+------------------------------------------------------------------+ //| Custom indicator iteration function | //+------------------------------------------------------------------+ 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[]) { //--- Проверка и расчёт количества просчитываемых баров if(rates_total<4 || Point()==0) return 0; //--- Проверка и расчёт количества просчитываемых баров int limit=rates_total-prev_calculated; if(limit>1) { limit=rates_total-1; ArrayInitialize(BufferTop,EMPTY_VALUE); ArrayInitialize(BufferBottom,EMPTY_VALUE); ArrayInitialize(BufferMA,0); ArrayInitialize(BufferBandsUP,0); ArrayInitialize(BufferBandsDN,0); } //--- Подготовка данных int count=(limit>1 ? rates_total : 1),copied=0; copied=CopyBuffer(handle_ma,0,0,count,BufferMA); if(copied!=count) return 0; copied=CopyBuffer(handle_bb,UPPER_BAND,0,count,BufferBandsUP); if(copied!=count) return 0; copied=CopyBuffer(handle_bb,LOWER_BAND,0,count,BufferBandsDN); if(copied!=count) return 0; //--- Расчёт индикатора for(int i=limit; i>=0 && !IsStopped(); i--) { double TL=BufferBandsUP[i]; double BL=BufferBandsDN[i]; if(InpMode==MODE_PRC) { if(TL!=BL) { BufferTop[i]=100.0*(TL-BufferMA[i])/(TL-BL); BufferBottom[i]=100.0*(BufferMA[i]-BL)/(TL-BL); } } else { BufferTop[i]=(TL-BufferMA[i])/Point(); BufferBottom[i]=(BufferMA[i]-BL)/Point(); } } //--- return value of prev_calculated for next call return(rates_total); } //+------------------------------------------------------------------+