Volatility Indicators

ATR - Average True Range

Measures market volatility.

atr.evaluate(period)
atr.evaluate(14)

Parameters:

• period: Number of periods (1-50)

Bollinger Bands

Price channels based on standard deviation.

bb.evaluate(source, period, deviation)
bb.evaluate(close, 20, 2)  // Standard Bollinger Bands

Parameters:

• source: Price source
• period: Moving average period (2-100)
• deviation: Standard deviation multiplier (0.1-5)