//+------------------------------------------------------------------+ //| BezierMA.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 "Bezier-weighting Moving Average" #property indicator_chart_window #property indicator_buffers 2 #property indicator_plots 1 //--- plot BMA #property indicator_label1 "Bezier MA" #property indicator_type1 DRAW_LINE #property indicator_color1 clrSlateBlue #property indicator_style1 STYLE_SOLID #property indicator_width1 1 //--- input parameters input uint InpPeriod = 8; // Period input double InpSensitivity = 0.5; // Sensitivity input ENUM_APPLIED_PRICE InpAppliedPrice = PRICE_CLOSE; // Applied price //--- indicator buffers double BufferBMA[]; double BufferMA[]; //--- global variables double Fact[]; double sensitivity; int period; int handle_ma; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int OnInit() { //--- set global variables period=int(InpPeriod<1 ? 1 : InpPeriod); sensitivity=(InpSensitivity<0 ? 0 : InpSensitivity); ArrayResize(Fact,period+1); Fact[0]=1; for(int i=1; i<=period; i++) Fact[i]=Fact[i-1]*i; //--- indicator buffers mapping SetIndexBuffer(0,BufferBMA,INDICATOR_DATA); SetIndexBuffer(1,BufferMA,INDICATOR_CALCULATIONS); //--- setting indicator parameters IndicatorSetString(INDICATOR_SHORTNAME,"Bezier MA ("+(string)period+","+DoubleToString(sensitivity,1)+")"); IndicatorSetInteger(INDICATOR_DIGITS,Digits()); //--- setting buffer arrays as timeseries ArraySetAsSeries(BufferBMA,true); ArraySetAsSeries(BufferMA,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; } //--- 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_total1) { limit=rates_total-period-1; ArrayInitialize(BufferBMA,EMPTY_VALUE); ArrayInitialize(BufferMA,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; //--- Расчёт индикатора for(int i=limit; i>=0 && !IsStopped(); i--) { double sum=0; for(int j=period; j>=0; j--) sum=sum+BufferMA[i+j]*(Fact[period]/(Fact[j]*Fact[period-j]))*pow(sensitivity,j)*pow(1.0-sensitivity,period-j); BufferBMA[i]=sum; } //--- return value of prev_calculated for next call return(rates_total); } //+------------------------------------------------------------------+