AvwapLibLibrary "AvwapLib"
Shared functions: AVWAP, stage classification, position sizing,
swing detection, and risk helpers. Used by all strategy() scripts.
NOTE: rs_vs_spy() cannot live here (request.security() banned in
library exports) — each strategy implements it inline.
avwap(src, anchor_bar, max_lookback)
Anchored VWAP from a specific bar to current bar.
Uses loop approach with bounded max_lookback for robustness.
Parameters:
src (float) : Source price (typically hlc3)
anchor_bar (int) : Bar index of anchor point (from find_swing_high/low)
max_lookback (simple int) : Maximum bars to look back (cap for performance, default 500 ~2yr daily)
Returns: AVWAP value, or na if anchor invalid or out of range
avwap_slope(avwap_val, lookback)
AVWAP slope — rate of change over lookback period.
Parameters:
avwap_val (float) : AVWAP series
lookback (simple int) : Number of bars for slope calculation
Returns: Slope (positive = rising, negative = falling), or na
dcr()
Daily Closing Range — where price closed within the bar's range.
Returns: DCR as percentage (0 = closed at low, 100 = closed at high)
rvol(period)
Relative Volume — current bar volume vs historical average.
Uses volume offset to avoid including current bar in average.
Parameters:
period (simple int) : Lookback period for average calculation
Returns: RVOL ratio (>1 = above average)
is_stage2()
Stage 2 check (simplified Weinstein model).
Conditions: price > SMA50, SMA50 rising (vs 10 bars ago), price > SMA200.
Returns: true if all Stage 2 conditions met
calc_shares(entry, stop, risk_pct, equity)
Position size: shares = floor(equity * risk% / risk_per_share).
Parameters:
entry (float) : Entry price
stop (float) : Stop-loss price
risk_pct (float) : Risk as decimal (0.01 = 1%)
equity (float) : Account equity
Returns: Number of shares (integer), 0 if invalid
rr_valid(entry, stop, target, min_rr)
Validate risk/reward ratio meets minimum threshold.
Parameters:
entry (float) : Entry price
stop (float) : Stop-loss price
target (float) : Target price
min_rr (float) : Minimum required R:R (e.g., 2.0 for 1:2)
Returns: true if R:R >= min_rr
confirmed()
Returns true only on confirmed (closed) bars.
MUST gate every entry/exit signal to prevent repainting.
Returns: true if bar is confirmed
find_swing_high(strength)
Bar index of the most recent confirmed swing high.
Uses ta.pivothigh — confirmed 'strength' bars after the actual high.
Result persists (via var) until a new swing high is detected.
Parameters:
strength (simple int) : Number of bars required on each side to confirm pivot
Returns: Bar index of last swing high, or na if none found yet
find_swing_low(strength)
Bar index of the most recent confirmed swing low.
Uses ta.pivotlow — confirmed 'strength' bars after the actual low.
Result persists (via var) until a new swing low is detected.
Parameters:
strength (simple int) : Number of bars required on each side to confirm pivot
Returns: Bar index of last swing low, or na if none found yet
Thư viện Pine Script®
