绘制 Hline 但需要参数

Question

所以我需要一个论据如果每 20 个新柱触发一次。如您所见，我已准备好代码，但出于某些愚蠢的原因，我无法弄清楚如何每 20 个新柱触发一次。

//Input options
highlength = input.int(20, "High Length")
lowlength  = input.int(20, "Low Length")

Tah = ta.highest(highlength)
Tal = ta.lowest(lowlength) 

//color fill
var highhighs = float(na)
var lowlows   = float(na)
var line Linehighhighs =           na
var line Linelowlows   =           na

if 'every 20 new bars i want to plot a line with the highest and lowest values'
    highhighs     := Tah
    lowlows       := Tal
    Linehighhighs :=           line.new(bar_index, highhighs, bar_index, highhighs, color = color.white, width = 2)
    Linelowlows   :=           line.new(bar_index, lowlows, bar_index, lowlows, color = color.white, width = 2)
else
    line.set_x2(Linehighhighs, bar_index)
    line.set_x2(Linelowlows, bar_index)

我真的很感激你能提供的任何帮助。

Answer 1

在 bar_index 上使用 Modulo Operator % 并将提醒与 0 进行比较将每 20 根柱触发一次条件：

if bar_index % 20 == 0 
    highhighs     := Tah
    lowlows       := Tal
    Linehighhighs :=           line.new(bar_index, highhighs, bar_index, highhighs, color = color.white, width = 2)
    Linelowlows   :=           line.new(bar_index, lowlows, bar_index, lowlows, color = color.white, width = 2)
else
    line.set_x2(Linehighhighs, bar_index)
    line.set_x2(Linelowlows, bar_index)