//+------------------------------------------------------------------+ //| Momentum.mq4 | //| Copyright 2005-2014, MetaQuotes Software Corp. | //| http://www.mql4.com | //+------------------------------------------------------------------+ #property copyright "2005-2014, MetaQuotes Software Corp." #property link "http://www.mql4.com" #property description "Momentum" #property strict #property indicator_separate_window #property indicator_buffers 1 #property indicator_color1 DodgerBlue //--- input parameter input int InpMomPeriod=14; // Momentum Period //--- buffers double ExtMomBuffer[]; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int OnInit(void) { string short_name; //--- indicator line SetIndexStyle(0,DRAW_LINE); SetIndexBuffer(0,ExtMomBuffer); //--- name for DataWindow and indicator subwindow label short_name="Mom("+IntegerToString(InpMomPeriod)+")"; IndicatorShortName(short_name); SetIndexLabel(0,short_name); //--- check for input parameter if(InpMomPeriod<=0) { Print("Wrong input parameter Momentum Period=",InpMomPeriod); return(INIT_FAILED); } //--- SetIndexDrawBegin(0,InpMomPeriod); //--- initialization done return(INIT_SUCCEEDED); } //+------------------------------------------------------------------+ //| Momentum | //+------------------------------------------------------------------+ 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 and input parameter if(rates_total<=InpMomPeriod || InpMomPeriod<=0) return(0); //--- counting from 0 to rates_total ArraySetAsSeries(ExtMomBuffer,false); ArraySetAsSeries(close,false); //--- initial zero if(prev_calculated<=0) { for(i=0; i