问仅绘制最后2个连接的摆动高/低(重绘指示器)
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Stack Overflow用户

提问于 2019-09-10 19:32:43

回答 1查看 1.3K关注 0票数 0

我编写了一个指示器，每当移动平均线交叉发生时，它会绘制最高的高位(和最低的低位)。

下面的代码运行得很好，但它有一个问题，那就是它保留了之前在交叉后被打破的高点。

我希望这些线只从一个最低点和一个最高点连接，因为十字架就像一个之字形指示器。

下面的图片更好地解释了这一点，绿线是指示器绘制的内容。黑线是它应该绘制的内容。

https://imgur.com/gcblrOA

有什么办法可以解决这个问题吗？谢谢

//@version=4
study(title="MA Cross", overlay=true, max_bars_back=3000)

MA1 = sma(close, 20)
MA2 = sma(close, 100)

Highest(src, len) =>
    max = high
    for i = 1 to len
        if src[i] > max
            max := src[i]
    max

Lowest(src, len) =>
    min = src[0]
    for i = 1 to len
        if src[i] < min
            min := src[i]
    min


trend = 0
trend := na(trend[1]) ? 1 : trend[1]

LL = 0.0
HH = 0.0

HH := Highest(high, barssince(cross(MA1, MA2)))
LL := Lowest(low, barssince(cross(MA1, MA2)))

HighLow = 0.0

recent = 0

HL = 0.0

if(MA1 > MA2)

    recent := 1

    for i = 1 to 200
        if(MA1[i] < MA2[i])
            break

        if(high < high[i])
            recent := -1
            break

    HL := na
    if(recent < 0)
        HighLow := na

    else        
        HighLow := high
        HL := high


else
    recent := 1
    HL := na
    for i = 1 to 200
        if(MA1[i] > MA2[i])
            break

        if(low > low[i])
            recent := -1
            break

    if(recent < 0)
        HighLow := na

    else        
        HighLow := low
        HL := low


plot(series= HighLow, color = color.green, linewidth=3)
plot(series=MA1, color = color.aqua, linewidth=1)
plot(series=MA2, color = color.orange, linewidth=1)

pine-script

回答 1

Stack Overflow用户

发布于 2019-09-11 23:56:39

正如您所说，这不会在所有数据集上绘制线条，因为它使用了line.new()。不过，如果它能派上用场：

//@version=4
study(title="MA Cross", overlay=true, max_bars_back=3000)

MA1 = sma(close, 20)
MA2 = sma(close, 100)

// Highest/lowest hi/lo during up/dn trend.
var hi = 0.
var lo = 10e20
// Bar index of highest/lowest hi/lo.
var hiBar = 0
var loBar = 0
// Crosses.
crossUp = crossover(MA1, MA2)
crossDn = crossunder(MA1, MA2)
upTrend = MA1 > MA2

// Draw line in past when a cross occurs.
if crossUp or crossDn
    line.new(bar_index[bar_index - hiBar], high[bar_index - hiBar], bar_index[bar_index - loBar], low[bar_index - loBar], xloc.bar_index, extend.none, color.black)

// Reset hi/lo and bar index on crosses.
if crossUp
    hi := high
    hiBar := bar_index
else
    if crossDn
        lo := low
        loBar := bar_index

// Update higher/lower hi/lo during trend.
if upTrend and high > hi
    hi := high
    hiBar := bar_index
else
    if not upTrend and low < lo
        lo := low
        loBar := bar_index

plot(series=MA1, color = color.aqua, linewidth=1)
plot(series=MA2, color = color.orange, linewidth=1)

// Debugging.        
// plot(hi, "High", color.green, 1, plot.style_circles)
// plot(lo, "Low", color.red, 1, plot.style_circles)
// plotchar(bar_index, "bar_index", "", location.top)
// plotchar(hiBar, "hiBar", "", location.top, color = color.green)
// plotchar(loBar, "loBar", "", location.top, color = color.red)
// bgcolor(upTrend ? color.green : color.red)