//+--------------------------------------------------------------------+ //| Second Bollinger Band added by accrete ATM_DualBollingerBands.mq4 | //| Copyright © 2005, Accrete LLC | //| http://www.accrete.com | //+--------------------------------------------------------------------+ #property copyright "Bollinger Band Indicator hack by Accrete" #property link "http://www.accrete.com/" #property indicator_chart_window #property indicator_buffers 5 #property indicator_color1 White #property indicator_color2 Aqua #property indicator_color3 Aqua #property indicator_color4 White #property indicator_color5 White //---- indicator parameters extern int BandsPeriod=20; extern int BandsShift=0; extern double BandsDeviations=1; extern double BandsDeviations2=1.5; //---- buffers double MovingBuffer[]; double UpperBuffer[]; double LowerBuffer[]; double UpperBuffer2[]; double LowerBuffer2[]; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { //---- indicators SetIndexStyle(0,DRAW_LINE,0,1); SetIndexBuffer(0,MovingBuffer); SetIndexStyle(1,DRAW_LINE,0,1); SetIndexBuffer(1,UpperBuffer); SetIndexStyle(2,DRAW_LINE,0,1); SetIndexBuffer(2,LowerBuffer); SetIndexStyle(3,DRAW_LINE,0,1); SetIndexBuffer(3,UpperBuffer2); SetIndexStyle(4,DRAW_LINE,0,1); SetIndexBuffer(4,LowerBuffer2); //---- SetIndexDrawBegin(0,BandsPeriod+BandsShift); SetIndexDrawBegin(1,BandsPeriod+BandsShift); SetIndexDrawBegin(2,BandsPeriod+BandsShift); SetIndexDrawBegin(3,BandsPeriod+BandsShift); SetIndexDrawBegin(4,BandsPeriod+BandsShift); //---- return(0); } //+------------------------------------------------------------------+ //| Bollinger Bands | //+------------------------------------------------------------------+ int start() { int i,k,counted_bars=IndicatorCounted(); double deviation; double deviation2; double sum,oldval,newres; //---- if(Bars<=BandsPeriod) return(0); //---- initial zero if(counted_bars<1) for(i=1;i<=BandsPeriod;i++) { MovingBuffer[Bars-i]=EMPTY_VALUE; UpperBuffer[Bars-i]=EMPTY_VALUE; LowerBuffer[Bars-i]=EMPTY_VALUE; UpperBuffer2[Bars-i]=EMPTY_VALUE; LowerBuffer2[Bars-i]=EMPTY_VALUE; } //---- int limit=Bars-counted_bars; if(counted_bars>0) limit++; for(i=0; i<limit; i++) MovingBuffer[i]=iMA(NULL,0,BandsPeriod,BandsShift,MODE_SMA,PRICE_CLOSE,i); //---- i=Bars-BandsPeriod+1; if(counted_bars>BandsPeriod-1) i=Bars-counted_bars-1; while(i>=0) { sum=0.0; k=i+BandsPeriod-1; oldval=MovingBuffer[i]; while(k>=i) { newres=Close[k]-oldval; sum+=newres*newres; k--; } deviation=BandsDeviations*MathSqrt(sum/BandsPeriod); UpperBuffer[i]=oldval+deviation; LowerBuffer[i]=oldval-deviation; deviation2=BandsDeviations2*MathSqrt(sum/BandsPeriod); UpperBuffer2[i]=oldval+deviation2; LowerBuffer2[i]=oldval-deviation2; i--; } //---- Comment(""); return(0); } //+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Series array that contains close prices for each bar
Indicator Curves created:
Implements a curve of type DRAW_LINE
Indicators Used:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features: