i-BandsPrice最新版

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//| i-BandsPrice.mq4 |
//| Copyright ?2008, Talex |
//| tan@gazinter.net |
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#property copyright “Copyright ?2008, Talex”
#property link “tan@gazinter.net”

#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Yellow
#property indicator_level1 0
#property indicator_level2 0.25
#property indicator_level3 0.5
#property indicator_level4 0.75
#property indicator_level5 1

extern int BandsPeriod=20;
extern int BandsShift=0;
extern double BandsDeviations=2.0;
extern int Slow=5;

double BPBuffer[],Buffer[];
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//| Custom indicator initialization function |
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void init() {

IndicatorBuffers(2);
IndicatorShortName(“i-BandsPrice (“+BandsPeriod+”, “+DoubleToStr(BandsDeviations,1)+”, “+Slow+”)”);
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,Buffer);
SetIndexBuffer(1,BPBuffer);

return;
}
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//| Custom indicator deinitialization function |
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void deinit() {

return;
}
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//| Custom indicator iteration function |
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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((upband-dwband)!=0)
BPBuffer[i]=(Close[i]-dwband)/(upband-dwband);
}
for(i=0;i<=limit;i++) {
Buffer[i]=iMAOnArray(BPBuffer,0,Slow,0,0,i);
}
return;
}
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