Bollinger Bands (middle)

What it measures: Bollinger middle line = SMA(period)

When to use it: Use as a reference mean for mean-reversion (price far from the middle line = stretched)

Typical period: 20

Caution: This node only gives the middle line — no upper/lower band. To get bands, compose them yourself: rolling_mean + Math (std not available yet), or wait for Python eject

Formula the engine actually uses

out-value = middle band = sma(close, period) — this node only gives the middle line (no upper/lower band)

smoothing: SMA (Bollinger middle line) · warmup: period