Percent Buy Index - formula

[sburtt]

Hi All,

does anybody know how to calculate the Percent Buy Index?

I am trying to figure out the mathematical formula. Thanks

More about this indicator on this website
ChartWatchers: PERCENT BUY INDEX VS. BULLISH PERCENT INDEX

 

[NVP]

theres a darvas box / donchian Channel feel to this ?

 

[sburtt]

theres a darvas box / donchian Channel feel to this ?

no i don t think so