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-> Copy and paste formulae below.


==============
OBV Volatility
==============
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{ On Balance Volume Volatility v1.0 }
{ Plot on own window below price chart }
{ ©Copyright 2004 Jose Silva }
{ http://www.metastocktools.com }

pds:=Input("Volatility StdDev periods",
 2,2520,10);
choose:=Input("base Volatility on:  OBV=1,  Close=2",1,2,1);
plot:=Input("plot:  Normal Vt=1,  Split Up+Down Vt=2,  OBV=3",1,3,1);

x:=Stdev(If(choose=1,OBV(C),C),pds);
y:=Ref(x,-1);
ratio:=Min(x,y)/Max(x,y);
Vt:=Abs(If(x>y,2-ratio,ratio)-1)*100;
VtAvg:=Cum(Vt)/Cum(Vt>-1);
VtUp:=If(x>Ref(x,-1),Vt,0);
VtDw:=-If(x<Ref(x,-1),Vt,0);

If(plot=2,VtUp,If(plot=3,OBV(C),VtAvg));
If(plot=2,VtDw,If(plot=3,OBV(C),Vt))

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=====================
OBV Volatility system
=====================
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{ On Balance Volume Volatility system v1.0 }
{ Enters Long on high negative OVB Volatility }
{ Exits Long on high positive OVB Volatility }
{ Plot on own window below price chart }
{ ©Copyright 2004 Jose Silva }
{ http://www.metastocktools.com }

pds:=Input("Volatility StdDev periods",
 2,2520,252);
level:=Input("Threshold levels",0,100,0.5);

x:=Stdev(OBV(C),pds);
y:=Ref(x,-1);
ratio:=Min(x,y)/Max(x,y);
Vt:=Abs(If(x>y,2-ratio,ratio)-1)*100;
VtUp:=If(x>Ref(x,-1),Vt,0);
VtDw:=-If(x<Ref(x,-1),Vt,0);

In:=Cross(-level,VtDw);
Out:=Cross(VtUp,level);

delay:=Input("Entry and Exit delay",0,5,0);
plot:=Input("plot:  entry/exit signals=1,  trade binary=2",1,2,1);

Init:=Cum(In+Out>-1)=1;
InInit:=Cum(In)=1;
flag:=Ref(BarsSince(Init OR In)
 < BarsSince(Init OR Out)+InInit,-delay);
In1:=Cum(Cum(In))=1;
Out1:=Cum(Cum(Out))=1;
signals:=(InInit AND Alert(InInit=0,2)
  OR flag AND Alert(flag=0,2))
   -(flag=0 AND Alert(flag,2));
odd:=Cum(1)/2=Int(Cum(1)/2);

Ref(If(plot=1,In1,0),-delay);
-(plot=1 AND Ref(Out1 AND BarsSince(In1)
 >=BarsSince(Out1),-delay));
If(plot=1,0,If(odd,flag,0));
If(plot=1,signals,flag)

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