如何实现Pine Script中两个plotshape均显示在K线底部？

我编写了名为SSL Hybrid 2X的Pine Script指标，希望通过两个不同的plotshape绘制两条独立线条，但目前仅能让一个显示在K线顶部、另一个在底部；若将两者都设为顶部或底部，会重叠导致无法区分。请问如何让这两个plotshape都显示在K线底部？

原代码如下：

indicator('SSL Hybrid 2X', overlay=true)
show_Baseline = input(title='Show Baseline', defval=true)

maType = input.string(title='SSL1 / Baseline Type', defval='HMA', options=['HMA'])
len = input(title='SSL1 / Baseline Length', defval=60)

SSL3Type = input.string(title='EXIT Type', defval='HMA', options=['HMA'])
len3 = input(title='EXIT Length', defval=15)
src = input(title='Source', defval=close)

ma(type, src, len) =>
    float result = 0
    if type == 'HMA'  // Hull
        result := ta.wma(2 * ta.wma(src, len / 2) - ta.wma(src, len), math.round(math.sqrt(len)))
        result
    
emaHigh = ma(maType, high, len)
emaLow = ma(maType, low, len)

BBMC = ma(maType, close, len)
useTrueRange = input(true)
multy = input.float(0.2, step=0.05, title='Base Channel Multiplier')
Keltma = ma(maType, src, len)
range_1 = useTrueRange ? ta.tr : high - low
rangema = ta.ema(range_1, len)
upperk = Keltma + rangema * multy
lowerk = Keltma - rangema * multy

open_pos = open * 1
close_pos = close * 1
difference = math.abs(close_pos - open_pos)

Hlv = int(na)
Hlv := close > emaHigh ? 1 : close < emaLow ? -1 : Hlv[1]
sslDown = Hlv < 0 ? emaHigh : emaLow

color_bar = close > upperk ? #00c3ff : close < lowerk ? #ff0062 : color.gray
color_ssl1 = close > sslDown ? #00c3ff : close < sslDown ? #ff0062 : na

plotshape(show_Baseline ? BBMC : na, style=shape.square, color=color_bar, title='MA Baseline')


show_Baseline_2 = input(title='Show Baseline 2', defval=true)

maType_2 = input.string(title='SSL1 2 / Baseline Type 2', defval='HMA', options=['HMA'])
len_2 = input(title='SSL1 2 / Baseline Length 2', defval=9)

SSL3Type_2 = input.string(title='EXIT Type 2', defval='HMA', options=['HMA'])
len3_2 = input(title='EXIT Length 2', defval=15)
src_2 = input(title='Source 2', defval=close)

ma_2(type, src_2, len_2) =>
    float result = 0
    if type == 'HMA'  // Hull
        result := ta.wma(2 * ta.wma(src_2, len_2 / 2) - ta.wma(src_2, len_2), math.round(math.sqrt(len_2)))
        result
    
emaHigh_2 = ma(maType_2, high, len_2)
emaLow_2 = ma(maType_2, low, len_2)

BBMC_2 = ma(maType_2, close, len_2)
useTrueRange_2 = input(true)
multy_2 = input.float(0.2, step=0.05, title='Base Channel Multiplier 2')
Keltma_2 = ma(maType_2, src_2, len_2)
range_1_2 = useTrueRange_2 ? ta.tr : high- low
rangema_2 = ta.ema(range_1_2, len_2)
upperk_2 = Keltma_2 + rangema_2 * multy_2
lowerk_2 = Keltma_2 - rangema_2 * multy_2

open_pos_2 = open * 1
close_pos_2 = close * 1
difference_2 = math.abs(close_pos_2 - open_pos_2)

Hlv_2 = int(na)
Hlv_2 := close > emaHigh_2 ? 1 : close < emaLow_2 ? -1 : Hlv_2[1]
sslDown_2 = Hlv_2 < 0 ? emaHigh_2 : emaLow_2

color_bar_2 = close> upperk_2 ? #00c3ff : close < lowerk_2 ? #ff0062 : color.gray
color_ssl1_2 = close > sslDown_2 ? #00c3ff : close < sslDown_2 ? #ff0062 : na

plotshape(show_Baseline_2 ? BBMC : na, style=shape.square, color=color_bar, title='MA Baseline')

1. 修正第二个plotshape的数据源错误 #

你当前第二个plotshape调用的是BBMC（第一个基线的数据），而非BBMC_2（第二个基线的数据），这是导致两条线重叠的核心原因之一。

2. 强制固定显示位置 #

给两个plotshape都添加location=location.belowbar参数，指定它们都显示在K线下方。

3. 添加偏移或调整大小避免重叠 #

可以通过offset参数让其中一条线横向偏移，或者调整size参数区分线条大小，确保两条线可清晰区分。

修改后的完整代码 #

indicator('SSL Hybrid 2X', overlay=true)
show_Baseline = input(title='Show Baseline', defval=true)

maType = input.string(title='SSL1 / Baseline Type', defval='HMA', options=['HMA'])
len = input(title='SSL1 / Baseline Length', defval=60)

SSL3Type = input.string(title='EXIT Type', defval='HMA', options=['HMA'])
len3 = input(title='EXIT Length', defval=15)
src = input(title='Source', defval=close)

ma(type, src, len) =>
    float result = 0
    if type == 'HMA'  // Hull
        result := ta.wma(2 * ta.wma(src, len / 2) - ta.wma(src, len), math.round(math.sqrt(len)))
        result
    
emaHigh = ma(maType, high, len)
emaLow = ma(maType, low, len)

BBMC = ma(maType, close, len)
useTrueRange = input(true)
multy = input.float(0.2, step=0.05, title='Base Channel Multiplier')
Keltma = ma(maType, src, len)
range_1 = useTrueRange ? ta.tr : high - low
rangema = ta.ema(range_1, len)
upperk = Keltma + rangema * multy
lowerk = Keltma - rangema * multy

open_pos = open * 1
close_pos = close * 1
difference = math.abs(close_pos - open_pos)

Hlv = int(na)
Hlv := close > emaHigh ? 1 : close < emaLow ? -1 : Hlv[1]
sslDown = Hlv < 0 ? emaHigh : emaLow

color_bar = close > upperk ? #00c3ff : close < lowerk ? #ff0062 : color.gray
color_ssl1 = close > sslDown ? #00c3ff : close < sslDown ? #ff0062 : na

// 第一个基线：显示在K线下方，默认大小
plotshape(show_Baseline ? BBMC : na, 
          style=shape.square, 
          color=color_bar, 
          title='MA Baseline',
          location=location.belowbar)


show_Baseline_2 = input(title='Show Baseline 2', defval=true)

maType_2 = input.string(title='SSL1 2 / Baseline Type 2', defval='HMA', options=['HMA'])
len_2 = input(title='SSL1 2 / Baseline Length 2', defval=9)

SSL3Type_2 = input.string(title='EXIT Type 2', defval='HMA', options=['HMA'])
len3_2 = input(title='EXIT Length 2', defval=15)
src_2 = input(title='Source 2', defval=close)

ma_2(type, src_2, len_2) =>
    float result = 0
    if type == 'HMA'  // Hull
        result := ta.wma(2 * ta.wma(src_2, len_2 / 2) - ta.wma(src_2, len_2), math.round(math.sqrt(len_2)))
        result
    
emaHigh_2 = ma(maType_2, high, len_2)
emaLow_2 = ma(maType_2, low, len_2)

BBMC_2 = ma(maType_2, close, len_2)
useTrueRange_2 = input(true)
multy_2 = input.float(0.2, step=0.05, title='Base Channel Multiplier 2')
Keltma_2 = ma(maType_2, src_2, len_2)
range_1_2 = useTrueRange_2 ? ta.tr : high- low
rangema_2 = ta.ema(range_1_2, len_2)
upperk_2 = Keltma_2 + rangema_2 * multy_2
lowerk_2 = Keltma_2 - rangema_2 * multy_2

open_pos_2 = open * 1
close_pos_2 = close * 1
difference_2 = math.abs(close_pos_2 - open_pos_2)

Hlv_2 = int(na)
Hlv_2 := close > emaHigh_2 ? 1 : close < emaLow_2 ? -1 : Hlv_2[1]
sslDown_2 = Hlv_2 < 0 ? emaHigh_2 : emaLow_2

color_bar_2 = close> upperk_2 ? #00c3ff : close < lowerk_2 ? #ff0062 : color.gray
color_ssl1_2 = close > sslDown_2 ? #00c3ff : close < sslDown_2 ? #ff0062 : na

// 第二个基线：显示在K线下方，偏移1个周期+缩小尺寸，避免重叠
plotshape(show_Baseline_2 ? BBMC_2 : na, 
          style=shape.square, 
          color=color_bar_2, 
          title='MA Baseline 2',
          location=location.belowbar,
          offset=1,
          size=size.size_tiny)

内容的提问来源于stack exchange，提问作者chprot