Calculates the Average True Range (ATR) as defined by Welles Wilder. A stock's range is the difference between the high and low prices on any given day. It reveals information about how volatile a stock is. Large ranges indicate high volatility and small ranges indicate low volatility (see investopedia for more).
Functions:
ATR(bars [,offset,series])
Returns the Average True Range over the specified period.
ATRN(bars [,offset,series])
Returns ATR as a percentage of the closing price. ATRN provides a better way to compare the volatility between stocks with different prices.
Examples:
To screen for stocks whose ATR increased in the past 10 bars enter:
ATR(14,0) > ATR(14,10)