如果最近发生在不久之前，如何跳过事件？

Question

无效代码：

Event = Something and SomethingElse and (ta.barssince(Event) > 20)

当然，它不会起作用，因为第一次，Event布尔变量还没有声明。

也许问题应该是“如何检查一个变量是否被定义”？（我试图找到答案。）

尝试失败（Event的所有信号消失）：

Event = Something and SomethingElse
Event := Something and SomethingElse and (ta.barssince(Event) > 20)

和

Event = false
Event := Something and SomethingElse and (ta.barssince(Event) > 20)

Answer 1

您可以使用 var 计数器。当您的事件发生时重置它，否则增加它。

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © vitruvius

//@version=5
indicator("My script", overlay=true)

n = input(2)

var bars_since_last_event = 0

is_green = (close > open) and (bars_since_last_event >= n)
bars_since_last_event := is_green ? 0 : bars_since_last_event + 1

plotshape(is_green)

如果最近发生在不久之前，如何跳过事件？

How to skip an Event if recently occurred not too long ago?

pine-script

pinescript-v5