//+------------------------------------------------------------------+ //| ATR.mq4 | //| Copyright 2005, MetaQuotes Software Corp. | //| http://www.metaquotes.net/ | //+------------------------------------------------------------------+ #property copyright "Copyright 2005, MetaQuotes Software Corp." #property link "http://www.metaquotes.net/" #property indicator_separate_window #property indicator_buffers 1 #property indicator_color1 DodgerBlue //---- input parameters extern int AtrPeriod=14; //---- buffers double AtrBuffer[]; double TempBuffer[]; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { string short_name; //---- 1 additional buffer used for counting. IndicatorBuffers(2); //---- indicator line SetIndexStyle(0,DRAW_LINE); SetIndexBuffer(0,AtrBuffer); SetIndexBuffer(1,TempBuffer); //---- name for DataWindow and indicator subwindow label short_name="ATR("+AtrPeriod+")"; IndicatorShortName(short_name); SetIndexLabel(0,short_name); //---- SetIndexDrawBegin(0,AtrPeriod); //---- return(0); } //+------------------------------------------------------------------+ //| Average True Range | //+------------------------------------------------------------------+ int start() { int i,counted_bars=IndicatorCounted(); //---- if(Bars<=AtrPeriod) return(0); //---- initial zero if(counted_bars<1) for(i=1;i<=AtrPeriod;i++) AtrBuffer[Bars-i]=0.0; //---- i=Bars-counted_bars-1; while(i>=0) { double high=High[i]; double low =Low[i]; if(i==Bars-1) TempBuffer[i]=high-low; else { double prevclose=Close[i+1]; TempBuffer[i]=MathMax(high,prevclose)-MathMin(low,prevclose); } i--; } //---- if(counted_bars>0) counted_bars--; int limit=Bars-counted_bars; for(i=0; i