//+------------------------------------------------------------------+
//| i-BandsWidth.mq4 |
//| Copyright © 2008, Talex |
//| tan@gazinter.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2008, Talex"
#property link "tan@gazinter.net"
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Red
extern int BandsPeriod=20;
extern int BandsShift=0;
extern double BandsDeviations=2.0;
extern int Slow=3;
double BWBuffer[],Buffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
void init() {
IndicatorBuffers(2);
IndicatorShortName("i-BandsWidth ("+BandsPeriod+", "+DoubleToStr(BandsDeviations,1)+", "+Slow+")");
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,Buffer);
SetIndexBuffer(1,BWBuffer);
return;
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
void deinit() {
return;
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
void start() {
int i,j,limit,cbars;
double sum,oldval,newres,deviation,upband,dwband;
//---------------------------------------------------
cbars=IndicatorCounted();
if(Bars<=BandsPeriod) return;
if(cbars<0) return;
if(cbars>0) limit=Bars-cbars-1;
else limit=Bars-BandsPeriod-1;
for(i=0;i<=limit;i++) {
sum=0.0;
oldval=iMA(NULL,0,BandsPeriod,BandsShift,MODE_SMA,PRICE_CLOSE,i);
for(j=0;j<BandsPeriod;j++) {
newres=Close[i+j]-oldval;
sum+=newres*newres;
}
deviation=BandsDeviations*MathSqrt(sum/BandsPeriod);
upband=oldval+deviation;
dwband=oldval-deviation;
if(oldval!=0)
BWBuffer[i]=(upband-dwband)/oldval;
}
for(i=0;i<=limit;i++) {
Buffer[i]=iMAOnArray(BWBuffer,0,Slow,0,0,i);
}
return;
}
//+------------------------------------------------------------------+
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: