//+------------------------------------------------------------------+ //| LRL.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 "Linear regression MA (LSMA)" #property indicator_chart_window #property indicator_buffers 2 #property indicator_plots 1 //--- plot LRL #property indicator_label1 "LSMA" #property indicator_type1 DRAW_LINE #property indicator_color1 clrCrimson #property indicator_style1 STYLE_SOLID #property indicator_width1 1 //--- input parameters input uint InpPeriod = 10; // Period input ENUM_APPLIED_PRICE InpAppliedPrice = PRICE_CLOSE; // Applied price //--- indicator buffers double BufferLRL[]; double BufferMA[]; //--- global variables int period; int handle_ma; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int OnInit() { //--- set global variables period=int(InpPeriod<1 ? 1 : InpPeriod); //--- indicator buffers mapping SetIndexBuffer(0,BufferLRL,INDICATOR_DATA); SetIndexBuffer(1,BufferMA,INDICATOR_CALCULATIONS); //--- setting indicator parameters IndicatorSetString(INDICATOR_SHORTNAME,"LSMA("+(string)period+")"); IndicatorSetInteger(INDICATOR_DIGITS,Digits()); //--- setting buffer arrays as timeseries ArraySetAsSeries(BufferLRL,true); ArraySetAsSeries(BufferMA,true); //--- create MA handle 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; } //--- 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 на минимальное колиество баров для расчёта if(rates_total1) { limit=rates_total-period-1; ArrayInitialize(BufferLRL,EMPTY_VALUE); ArrayInitialize(BufferMA,EMPTY_VALUE); } //--- Подготовка данных int copied=0,count=(limit==0 ? 1 : rates_total); copied=CopyBuffer(handle_ma,0,0,count,BufferMA); if(copied!=count) return 0; //--- Расчёт индикатора for(int i=limit; i>=0 && !IsStopped(); i--) { double x=0,y=0,xy=0,x2=0; for(int j=0; j