Volatility Quality Index

[pbereau]

Here's the tradestation code of Stridsman's Volatility Quality Index indicator....the formula seems very simple...i want to implement it in esignal...thanks for your help!
Only two variables for this indicator...


Type : Indicator, Name : Volatility Quality Index
Variables:
VQI(0),
SumVQI(0);

If TrueRange <> 0 and (High - Low) <> 0 Then
VQI = ((Close - Close[1]) / TrueRange + (Close - Open) / (High - Low)) * 0.5
Else
VQI=VQI[1];
VQI = AbsValue(VQI) * ((Close - Close[1] + (Close - Open)) * 0.5);
SumVQI = SumVQI + VQI;
Plot1(SumVQI,"");
Plot2(Average(SumVQI,9),"");
Plot3(Average(SumVQI,200),"");


I think, in easylanguage:

TrueRange = max([high]-[low], max([high]-val([close],1), val([close],1)-[low]));

Explanations:
<>0 different of zero
Close[1] Close(one period before)