python wrapper

lib/channels/aberr/aberr.pine

@@ -0,0 +1,47 @@
+// The MIT License (MIT)
+// © mihakralj
+//@version=6
+indicator("Aberration (ABERR)", "ABERR", overlay=true)
+
+//@function Calculates Aberration bands measuring deviation from a central moving average
+//@param source Series to calculate aberration from
+//@param ma_line Pre-calculated moving average line
+//@param period Lookback period for deviation calculation
+//@param multiplier Multiplier for deviation bands
+//@returns [upper_band, lower_band, deviation] Aberration band values and deviation
+//@optimized Uses simple deviation averaging with O(n) complexity
+aberr(series float source, series float ma_line, simple int period, simple float multiplier) =>
+    if period <= 0 or multiplier <= 0.0
+        runtime.error("Period and multiplier must be greater than 0")
+    float deviation = math.abs(nz(source) - nz(ma_line))
+    float avg_deviation = ta.sma(deviation, period)
+    float upper_band = ma_line + multiplier * avg_deviation
+    float lower_band = ma_line - multiplier * avg_deviation
+    [upper_band, lower_band, avg_deviation]
+
+// ---------- Main loop ----------
+
+// Inputs
+i_source = input.source(close, "Source")
+i_period = input.int(20, "Period", minval=1)
+i_ma_type = input.string("SMA", "Moving Average Type", options=["SMA", "EMA", "WMA", "RMA", "HMA"])
+i_multiplier = input.float(2.0, "Deviation Multiplier", minval=0.1, step=0.1)
+i_show_ma = input.bool(true, "Show Moving Average Line")
+
+// Calculate the moving average based on selected type
+ma_line = switch i_ma_type
+    "SMA" => ta.sma(i_source, i_period)
+    "EMA" => ta.ema(i_source, i_period)
+    "WMA" => ta.wma(i_source, i_period)
+    "RMA" => ta.rma(i_source, i_period)
+    "HMA" => ta.wma(2 * ta.wma(i_source, i_period / 2) - ta.wma(i_source, i_period), math.round(math.sqrt(i_period)))
+    => ta.sma(i_source, i_period)
+
+// Calculation
+[upper_band, lower_band, deviation] = aberr(i_source, ma_line, i_period, i_multiplier)
+
+// Plots
+p_upper = plot(upper_band, "Upper Band", color=color.yellow, linewidth=2)
+p_lower = plot(lower_band, "Lower Band", color=color.yellow, linewidth=2)
+plot(i_show_ma ? ma_line : na, "MA", color=color.yellow, linewidth=2)
+fill(p_upper, p_lower, color=color.new(color.blue, 90), title="Band Fill")