//+------------------------------------------------------------------+ //| Average Size Bar.mq4 | //| . aka KimIV. | //| http://www.kimiv.ru/ | //+------------------------------------------------------------------+ #property copyright " . aka KimIV." #property link "http://www.kimiv.ru/" #property indicator_separate_window #property indicator_buffers 1 #property indicator_color1 Red //---- indicator parameters extern int MA_Period=10; extern int MA_Shift=0; extern int MA_Method=0; //---- indicator buffers double ExtMapBuffer[]; //---- int ExtCountedBars=0; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { int draw_begin; string short_name; //---- drawing settings SetIndexStyle(0, DRAW_LINE); SetIndexShift(0, MA_Shift); IndicatorDigits(MarketInfo(Symbol(), MODE_DIGITS)); if(MA_Period<2) MA_Period=10; draw_begin = MA_Period - 1; //---- indicator short name switch(MA_Method) { case 1 : short_name = "EMA("; draw_begin = 0; break; case 2 : short_name = "SMMA("; break; case 3 : short_name = "LWMA("; break; default : short_name = "SMA("; MA_Method = 0; } IndicatorShortName(short_name + MA_Period + ")"); SetIndexDrawBegin(0, draw_begin); //---- indicator buffers mapping SetIndexBuffer(0, ExtMapBuffer); //---- initialization done return(0); } //+------------------------------------------------------------------+ //| | //+------------------------------------------------------------------+ int start() { if(Bars<=MA_Period) return(0); ExtCountedBars=IndicatorCounted(); //---- check for possible errors if (ExtCountedBars<0) return(-1); //---- last counted bar will be recounted if (ExtCountedBars>0) ExtCountedBars--; //---- switch(MA_Method) { case 0 : sma(); break; case 1 : ema(); break; case 2 : smma(); break; case 3 : lwma(); } //---- done return(0); } //+------------------------------------------------------------------+ //| Simple Average Size Bar | //+------------------------------------------------------------------+ void sma() { double sum = 0; int i, pos = Bars - ExtCountedBars - 1; //---- initial accumulation if(pos=0) { sum+=High[pos]-Low[pos]; ExtMapBuffer[pos]=sum/MA_Period; sum-=High[pos+MA_Period-1]-Low[pos+MA_Period-1]; pos--; } //---- zero initial bars if(ExtCountedBars<1) for(i=1;i2) pos=Bars-ExtCountedBars-1; //---- main calculation loop while(pos>=0) { if(pos==Bars-2) ExtMapBuffer[pos+1]=High[pos+1]-Low[pos+1]; ExtMapBuffer[pos]=(High[pos]-Low[pos])*pr+ExtMapBuffer[pos+1]*(1-pr); pos--; } } //+------------------------------------------------------------------+ //| Smoothed Average Size Bar | //+------------------------------------------------------------------+ void smma() { double sum=0; int i,k,pos=Bars-ExtCountedBars+1; //---- main calculation loop pos=Bars-MA_Period; if(pos>Bars-ExtCountedBars) pos=Bars-ExtCountedBars; while(pos>=0) { if(pos==Bars-MA_Period) { //---- initial accumulation for(i=0,k=pos;i=0) { ExtMapBuffer[pos]=sum/weight; if(pos==0) break; pos--; i--; price=High[pos]-Low[pos]; sum=sum-lsum+price*MA_Period; lsum-=High[i]-Low[i]; lsum+=price; } //---- zero initial bars if(ExtCountedBars<1) for(i=1;i