line - pinescript - 当价格越过一条线时立即（不是在收盘时）画一条水平线

Question

价格上穿 ema10 时开多头，下穿时做空。长目标是l线，短目标是s线。

例如，在做多时，我想在价格越过 l 线时立即（而不是收盘时）画一条水平线。同样，我想在价格穿越 s 线时画一条水平线，简而言之。我无法画线，因为 l 和 s 不是恒定的。我想计算交叉点和交叉点的价格。

这是一个图片的例子

//@version=4
study(title="ema buy sell", overlay=true)
ema1 = ema(close, 10)
l = ema1 * 1.02
s = ema1 * 0.98


plot(ema1, title="Ema 10", color=color.blue, linewidth=1, transp=0)
plot(l, title="Take Long TP", color=color.red, linewidth=2, transp=0)
plot(s, title="Take Short TP", color=color.green, linewidth=1, transp=0)


longCond = crossover(high, ema1)
shortCond = crossunder(low, ema1)

plotshape(series=longCond, title="Long", style=shape.triangleup, location=location.belowbar, color=color.green, text="LONG", size=size.small)
plotshape(series=shortCond, title="Short", style=shape.triangledown, location=location.abovebar, color=color.red, text="SHORT", size=size.small)

Answer 1

如您所述，此脚本将在高/高频带分频器上打印线。

//@version=4
study(title="ema buy sell", overlay=true)
ema1 = ema(close, 10)
l = ema1 * 1.02
s = ema1 * 0.98

plot(ema1, title="Ema 10", color=color.blue, linewidth=1, transp=0)
plot(l, title="Take Long TP", color=color.red, linewidth=2, transp=0)
plot(s, title="Take Short TP", color=color.green, linewidth=1, transp=0)

longCond = crossover(high, ema1)
shortCond = crossunder(low, ema1)

plotshape(series=longCond, title="Long", style=shape.triangleup, location=location.belowbar, color=color.green, text="LONG", size=size.small)
plotshape(series=shortCond, title="Short", style=shape.triangledown, location=location.abovebar, color=color.red, text="SHORT", size=size.small)

var float lineOnCrossOver = na
if crossover(high, l)
    lineOnCrossOver := l
plot(lineOnCrossOver, color = change(lineOnCrossOver)? na : color.green)