如何在Pine脚本中使用VAR？
这是一个指标：
//box
boxp=input(5, "BOX LENGTH")
LL = lowest(low,boxp)
k1=highest(high,boxp)
k2=highest(high,boxp-1)
k3=highest(high,boxp-2)
NH = valuewhen(high>k1[1],high,0)
box1 =k3<k2
TopBox = valuewhen(barssince(high>k1[1])==boxp-2 and box1, NH, 0)
BottomBox = valuewhen(barssince(high>k1[1])==boxp-2 and box1, LL, 0)
我使用变量： var longStopPrice = bottombox [0]，
但是当我绘制longStopprice时，无法显示该值。 谁能帮我吗？
This is an indicator:
//box
boxp=input(5, "BOX LENGTH")
LL = lowest(low,boxp)
k1=highest(high,boxp)
k2=highest(high,boxp-1)
k3=highest(high,boxp-2)
NH = valuewhen(high>k1[1],high,0)
box1 =k3<k2
TopBox = valuewhen(barssince(high>k1[1])==boxp-2 and box1, NH, 0)
BottomBox = valuewhen(barssince(high>k1[1])==boxp-2 and box1, LL, 0)
and I use variable:
var longstopprice = BottomBox[0]
but it isn't available to display the value when I plot longstopprice.
Can anyone help me?
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var是用于分配变量和一次性初始化的关键字。当您执行
longStopPrice = bottombox [0]时，它将初始化``longstoppriceinbottombox`在 in of of of of of of ''除非您明确地这样做，否则切勿更改其价值。它将采用
bottombox几个bar以获取任何na值，因为您正在使用gixes（）andbarssince（）> /代码>。如果绘制
BottomBox，您将看到它需要几个条，直到获得有效的数字值。varis the keyword used for assigning and one-time initializing of the variable.When you do
longstopprice = BottomBox[0], it will initialize ´longstoppricewith the value ofBottomBox` on the very first bar and it will never change its value unless you explicitly do that.It will take
BottomBoxseveral bars to get any nonenavalue because you are using functions likehighest()andbarssince().If you plot
BottomBox, you will see that it will take a few bars until it gets a valid number value.