//+------------------------------------------------------------------+ //| bbhisto.mq4 | //| Copyright 2005, Nick Bilak | //| http://metatrader.50webs.com/ beluck[at]gmail.com | //+------------------------------------------------------------------+ #property copyright "Copyright 2005, Nick Bilak" #property link "http://metatrader.50webs.com/" #property indicator_separate_window #property indicator_buffers 3 #property indicator_color1 Lime #property indicator_color2 Aqua #property indicator_color3 Magenta //---- input parameters extern int bolingerPeriod=13; //---- buffers double bb[]; double up[]; double lo[]; int i,j; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { SetIndexStyle(0,DRAW_HISTOGRAM); SetIndexBuffer(0,bb); SetIndexStyle(1,DRAW_ARROW); SetIndexBuffer(1,up); SetIndexEmptyValue(1,EMPTY_VALUE); SetIndexArrow(1,159); SetIndexStyle(2,DRAW_ARROW); SetIndexBuffer(2,lo); SetIndexEmptyValue(2,EMPTY_VALUE); SetIndexArrow(2,159); return(0); } //+------------------------------------------------------------------+ //| Custor indicator deinitialization function | //+------------------------------------------------------------------+ int deinit() { //---- //---- return(0); } //+------------------------------------------------------------------+ //| Custom indicator iteration function | //+------------------------------------------------------------------+ int start() { int counted_bars=IndicatorCounted(); int shift,limit; double diff,d,ku,kd,km; if (counted_bars<0) return(-1); if (counted_bars>0) counted_bars--; limit=Bars-31; if(counted_bars>=31) limit=Bars-counted_bars-1; for (shift=limit+30;shift>=0;shift--) { bb[shift]=0; d=iStdDev(NULL,0,bolingerPeriod,MODE_SMA,0,PRICE_CLOSE,shift); if( d<0.0001) d=0.0001; bb[shift]=((Close[shift]+2*d - iMA(NULL,0,bolingerPeriod,0,MODE_SMA,PRICE_CLOSE,shift)) / (4*d))*4-2; bb[shift]=bb[shift]/3; up[shift]=EMPTY_VALUE; lo[shift]=EMPTY_VALUE; if (bb[shift]>0) { up[shift]=1; } if (bb[shift]<0) { lo[shift]=-1; } } return(0); } //+------------------------------------------------------------------+