Another moving average by Tuschar Chande. The indicator is essentailly
a dynamic exponential moving average. An index is used inside
VIDYA to govern its speed making it adaptive as a function of
volitility. As short-term volatility increases, VIDYA's
exponential moving average is designed to move faster, and as
volatility decreases, VIDYA slows down. The index used in this
implementation is another Chande indicator CMO the Chande
Momentum Oscillator. There are two input parameters: Vidya Period (the
exponential constnt) and the Volitility Period (the period over
which the CMO is calculated). More info can be founed in The New
Technical Trader by Tushar Chande and Stanley Kroll.