mirror of
https://github.com/mihakralj/QuanTAlib.git
synced 2026-07-28 01:37:43 +00:00
Miha Kralj
39 lines
1.3 KiB
Plaintext
39 lines
1.3 KiB
Plaintext
// Licensed under the Apache License, Version 2.0
|
|
// © mihakralj
|
|
//@version=6
|
|
indicator("Williams %R (WILLR)", "WILLR", overlay=false)
|
|
|
|
//@function Calculates Williams %R oscillator
|
|
//@param period Lookback period for highest high and lowest low calculation
|
|
//@returns Williams %R value (-100 to 0 scale)
|
|
willr(simple int period) =>
|
|
if period <= 0
|
|
runtime.error("Period must be positive")
|
|
var array<float> high_buffer = array.new_float(period, na)
|
|
var array<float> low_buffer = array.new_float(period, na)
|
|
var int head = 0, var int count = 0
|
|
idx = head % period
|
|
old_high = array.get(high_buffer, idx)
|
|
if not na(old_high)
|
|
count := count - 1
|
|
array.set(high_buffer, idx, high)
|
|
array.set(low_buffer, idx, low)
|
|
count := count + 1
|
|
head := head + 1
|
|
highest_high = array.max(high_buffer)
|
|
lowest_low = array.min(low_buffer)
|
|
range_val = highest_high - lowest_low
|
|
range_val > 0 ? -100 * (highest_high - close) / range_val : -50
|
|
|
|
|
|
// ---------- Main loop ----------
|
|
|
|
// Inputs
|
|
i_period = input.int(14, "Period", minval=1, maxval=100, tooltip="Lookback period for highest high and lowest low calculation")
|
|
|
|
// Calculation
|
|
willr_value = willr(i_period)
|
|
|
|
// Plots
|
|
plot(willr_value, "Williams %R", color=color.yellow, linewidth=2)
|