This indicator is a ported MQL5 indicator from http://www.mql5.com/en/code/1681
The indicator shows the volatility.
Formulas:
Pirson = Sum/Res, where
Sum = sum((Close-MA)*(Close-MA)),
Res = Period*StdDev[i]*StdDev[i-1].
Download:
For this indicator must be installed StdDev indicator (viewtopic.php?f=17&t=870).
The indicator was revised and updated