//+------------------------------------------------------------------+ //| Momentum.mq5 | //| Copyright 2009, MetaQuotes Software Corp. | //| http://www.mql5.com | //+------------------------------------------------------------------+ #property copyright "2009, MetaQuotes Software Corp." #property link "http://www.mql5.com" //---- indicator settings #property indicator_separate_window #property indicator_buffers 1 #property indicator_plots 1 #property indicator_type1 DRAW_LINE #property indicator_color1 DodgerBlue //---- input parameters input int InpMomentumPeriod=14; // Period //---- indicator buffers double ExtMomentumBuffer[]; //--- global variable int ExtMomentumPeriod; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ void OnInit() { //--- check for input value if(InpMomentumPeriod<0) { ExtMomentumPeriod=14; Print("Input parameter InpMomentumPeriod has wrong value. Indicator will use value ",ExtMomentumPeriod); } else ExtMomentumPeriod=InpMomentumPeriod; //---- buffers SetIndexBuffer(0,ExtMomentumBuffer,INDICATOR_DATA); //---- name for DataWindow and indicator subwindow label IndicatorSetString(INDICATOR_SHORTNAME,"Momentum"+"("+string(ExtMomentumPeriod)+")"); //--- sets first bar from what index will be drawn PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,ExtMomentumPeriod-1); //--- sets drawing line empty value PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0.0); //--- digits IndicatorSetInteger(INDICATOR_DIGITS,2); } //+------------------------------------------------------------------+ //| Momentum | //+------------------------------------------------------------------+ int OnCalculate(const int rates_total, const int prev_calculated, const int begin, const double &price[]) { //--- start calculation int StartCalcPosition=(ExtMomentumPeriod-1)+begin; //---- insufficient data if(rates_total0) PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,StartCalcPosition+(ExtMomentumPeriod-1)); //--- start working, detect position int pos=prev_calculated-1; if(pos