【发布时间】：2022-01-03 21:29:34
【问题描述】：
我正在尝试创建一个脚本，当 SMMA 交叉发生并且之后绘制威廉姆斯分形时突出显示。
我正在使用 valuewhen() 来捕获交叉。当分形打印并且 RSI 高于/低于 50 时，我使用存储的 valuewhen() 来验证是否满足交叉条件并可以突出显示该背景。
问题是，我不知道在满足条件后如何重置 valuewhen()。
提供的屏幕截图显示了运行红色短裤和蓝色长头的脚本。白色背景条是发生交叉的地方，我只希望它旁边的红色条突出显示（在 Fractal 打印之后），它表示一个条目。
这是我第一次写 Pinescript，对于任何菜鸟的错误，我们深表歉意。
// @version=5
indicator(title = "3 SMMA Cross Strategy", shorttitle="3SMMA", overlay=true)
// smma
len1 = input.int(60, minval=1, title="Length")
src1 = input(close, title="Source")
_sma1 = ta.sma(src1, len1)
smma_21 = 0.0
smma_21 := na(smma_21[1]) ? _sma1 : (smma_21[1] * (len1 - 1) + src1) / len1
len2 = input.int(100, minval=1, title="Length")
src2 = input(close, title="Source")
_sma2 = ta.sma(src2, len2)
smma_50 = 0.0
smma_50 := na(smma_50[1]) ? _sma2 : (smma_50[1] * (len2 - 1) + src2) / len2
len3 = input.int(200, minval=1, title="Length")
src3 = input(close, title="Source")
_sma3 = ta.sma(src3, len3)
smma_200 = 0.0
smma_200 := na(smma_200[1]) ? _sma3 : (smma_200[1] * (len3 - 1) + src3) / len3
smma_cross_21_200 = ta.cross(smma_21,smma_200)
smma_cross_50_200 = ta.cross(smma_50,smma_200)
// rsi
_rsi = ta.rsi(close, 14)
// williams fractals
n = input.int(title="Periods", defval=2, minval=2)
dnFractal = (high[n-2] < high[n]) and (high[n-1] < high[n]) and (high[n+1] < high[n]) and (high[n+2] < high[n])
upFractal = (low[n-2] > low[n]) and (low[n-1] > low[n]) and (low[n+1] > low[n]) and (low[n+2] > low[n])
// begin conditionals
check_shorts = ta.valuewhen((smma_cross_21_200 or smma_cross_50_200) and ((smma_200 > smma_50 and smma_21) and ( smma_50 > smma_21 )), close, 1)
check_longs = ta.valuewhen((smma_cross_21_200 or smma_cross_50_200) and ((smma_200 < smma_50 and smma_21) and ( smma_50 < smma_21 )), close, 1)
TRANSP = 90
bgcolor( dnFractal and check_shorts and _rsi < 50 ? color.new(color.red, TRANSP) : na )
bgcolor( upFractal and check_longs and _rsi < 50 ? color.new(color.blue, TRANSP) : na )
【问题讨论】：
标签： pine-script trading