如何在Pine Script中创建三角形及反向三角形形态？含制作步骤与原理

形态形成原理 #

• 三角形形态：收敛型整理形态，核心是价格波动的高低点逐步收敛：
  • 对称三角形：高点依次降低、低点依次抬高，波动区间收窄
  • 上升三角形：高点基本持平，低点持续抬升
  • 下降三角形：低点基本持平，高点持续降低
• 反向三角形（扩散三角形）：发散型形态，价格波动的高低点持续向外扩散（高点越来越高、低点越来越低），通常预示原有趋势终结或反转。

实现步骤 #

1. 获取Zigzag高低点数据 #

通过Pine Script内置函数提取走势中的关键高低点，示例用固定周期参数获取：

//@version=5
indicator("Zigzag 三角形/反向三角形", overlay=true)

zigzagLength = input.int(10, title="Zigzag 周期")
pivotHigh = ta.pivothigh(zigzagLength, zigzagLength)
pivotLow = ta.pivotlow(zigzagLength, zigzagLength)

2. 跟踪连续高低点序列 #

用数组存储最近3个关键高低点（三角形形态至少需要3个点来构建连线）：

// 存储最近3个高点和低点
var float[] highPoints = array.new_float(3)
var float[] lowPoints = array.new_float(3)

// 更新高点数组
if (not na(pivotHigh))
    array.shift(highPoints)
    array.push(highPoints, pivotHigh)

// 更新低点数组
if (not na(pivotLow))
    array.shift(lowPoints)
    array.push(lowPoints, pivotLow)

3. 判断形态成立条件 #

对称三角形

当3个高点依次降低、3个低点依次抬高时判定：

isSymTriangle = array.size(highPoints) == 3 
    and array.get(highPoints,0) > array.get(highPoints,1) and array.get(highPoints,1) > array.get(highPoints,2) 
    and array.get(lowPoints,0) < array.get(lowPoints,1) and array.get(lowPoints,1) < array.get(lowPoints,2)

上升三角形

当3个高点在误差范围内持平、3个低点依次抬升时判定：

tolerance = input.float(0.5, title="高点持平容忍度(%)")
highDiff = math.abs((array.get(highPoints,0) - array.get(highPoints,2)) / array.get(highPoints,0)) * 100
isAscTriangle = array.size(highPoints) == 3 and highDiff < tolerance
    and array.get(lowPoints,0) < array.get(lowPoints,1) and array.get(lowPoints,1) < array.get(lowPoints,2)

反向三角形

当3个高点依次抬高、3个低点依次降低时判定：

isReverseTriangle = array.size(highPoints) == 3 
    and array.get(highPoints,0) < array.get(highPoints,1) and array.get(highPoints,1) < array.get(highPoints,2)
    and array.get(lowPoints,0) > array.get(lowPoints,1) and array.get(lowPoints,1) > array.get(lowPoints,2)

4. 绘制形态连线 #

根据判定结果，用画线函数绘制三角形的上下边线：

// 绘制对称三角形
if (isSymTriangle)
    line.new(bar_index[zigzagLength*2], array.get(highPoints,0), bar_index, array.get(highPoints,2), color=color.blue, width=2)
    line.new(bar_index[zigzagLength*2], array.get(lowPoints,0), bar_index, array.get(lowPoints,2), color=color.blue, width=2)

// 绘制上升三角形
if (isAscTriangle)
    line.new(bar_index[zigzagLength*2], array.get(highPoints,0), bar_index, array.get(highPoints,2), color=color.green, width=2)
    line.new(bar_index[zigzagLength*2], array.get(lowPoints,0), bar_index, array.get(lowPoints,2), color=color.green, width=2)

// 绘制反向三角形
if (isReverseTriangle)
    line.new(bar_index[zigzagLength*2], array.get(highPoints,0), bar_index, array.get(highPoints,2), color=color.red, width=2)
    line.new(bar_index[zigzagLength*2], array.get(lowPoints,0), bar_index, array.get(lowPoints,2), color=color.red, width=2)

自定义调整建议 #

• 修改zigzagLength参数适配不同时间周期的走势
• 调整tolerance参数优化“持平”高低点的判定精度
• 可添加形态突破报警逻辑，当价格突破边线时触发提示

内容的提问来源于stack exchange，提问作者RayPush