Summary
PivotPoints is RTTA's streaming classic floor-trader pivot set. Levels for the
current bar are computed from the previous bar's high, low, and close; then the
current bar becomes the next previous bar.
Update API
result = rtta.PivotPoints(fillna=True).update(high, low, close)
# result.pp, result.r1, result.r2, result.r3, result.s1, result.s2, result.s3
The first bar only seeds previous HLC. With fillna=True, all seven fields
return that bar's close; with fillna=False, they return NaN.
Theory Of Operation
Classic pivot points average the prior session's high, low, and close into a central pivot \(PP\), then project resistance and support levels from that pivot and the prior range. Floor traders historically used these as intraday reference prices. RTTA's streaming form uses bar-to-bar previous HLC (suitable for any regular bar stream), not a separate session calendar.
Related variants: WoodiePivotPoints,
CamarillaPivotPoints,
FibonacciPivotPoints.
Recurrence
Let \(H_{t-1}, L_{t-1}, C_{t-1}\) be the previous bar's high, low, and close.
After emitting levels, RTTA sets previous HLC to the current bar's \(H_t, L_t, C_t\).
Implementation Notes
The recurrence is implemented in src/rtta/indicator.cpp in
class PivotPoints. The result type is PivotPointsResult with fields
pp, r1, r2, r3, s1, s2, s3.