Pine Script合并RSI与MACD指标后低价股显示异常求助

问题原因 #

合并脚本后，RSI（数值范围0-100）与MACD（低价股中数值通常仅0.1-0.5左右）共用同一个图表刻度轴。图表会自动适配数值范围更大的RSI，导致MACD的微小数值被压缩成几乎不可见的柱体/线条；而单独使用MACD时，图表会适配其自身的小数值范围，因此显示正常。此外，原脚本中indicator()声明使用format=format.price（价格格式），与RSI的指数属性不匹配，也会加剧显示缩放问题。

解决方案 #

通过以下两步修复：

• 修正指标全局格式设置，移除format=format.price，避免格式冲突导致的缩放异常。
• 给MACD的绘图函数添加scale=scale.right参数，让MACD使用右侧独立刻度轴，与RSI的左侧刻度轴分离，各自适配自身数值范围。

修改后的完整代码 #

indicator(title="RSI + MACD", shorttitle="RSI+MACD", precision=2, timeframe="", timeframe_gaps=true)

// RSI 部分
ma(source, length, type) =>
    switch type
        "SMA" => ta.sma(source, length)
        "Bollinger Bands" => ta.sma(source, length)
        "EMA" => ta.ema(source, length)
        "SMMA (RMA)" => ta.rma(source, length)
        "WMA" => ta.wma(source, length)
        "VWMA" => ta.vwma(source, length)

rsiLengthInput = input.int(14, minval=1, title="RSI Length", group="RSI Settings")
rsiSourceInput = input.source(close, "Source", group="RSI Settings")
maTypeInput = input.string("SMA", title="MA Type", options=["SMA", "Bollinger Bands", "EMA", "SMMA (RMA)", "WMA", "VWMA"], group="MA Settings")
maLengthInput = input.int(14, title="MA Length", group="MA Settings")
bbMultInput = input.float(2.0, minval=0.001, maxval=50, title="BB StdDev", group="MA Settings")

up = ta.rma(math.max(ta.change(rsiSourceInput), 0), rsiLengthInput)
down = ta.rma(-math.min(ta.change(rsiSourceInput), 0), rsiLengthInput)
rsi = down == 0 ? 100 : up == 0 ? 0 : 100 - (100 / (1 + up / down))
rsiMA = ma(rsi, maLengthInput, maTypeInput)
isBB = maTypeInput == "Bollinger Bands"

plot(rsi, "RSI", color=#7E57C2)
plot(rsiMA, "RSI-based MA", color=color.yellow)
rsiUpperBand = hline(70, "RSI Upper Band", color=#787B86)
hline(50, "RSI Middle Band", color=color.new(#787B86, 50))
rsiLowerBand = hline(30, "RSI Lower Band", color=#787B86)
fill(rsiUpperBand, rsiLowerBand, color=color.rgb(126, 87, 194, 90), title="RSI Background Fill")
bbUpperBand = plot(isBB ? rsiMA + ta.stdev(rsi, maLengthInput) * bbMultInput : na, title = "Upper Bollinger Band", color=color.green)
bbLowerBand = plot(isBB ? rsiMA - ta.stdev(rsi, maLengthInput) * bbMultInput : na, title = "Lower Bollinger Band", color=color.green)
fill(bbUpperBand, bbLowerBand, color= isBB ? color.new(color.green, 90) : na, title="Bollinger Bands Background Fill")

// MACD 部分
fast_length = input(title="Fast Length", defval=12)
slow_length = input(title="Slow Length", defval=26)
src = input(title="Source", defval=close)
signal_length = input.int(title="Signal Smoothing",  minval = 1, maxval = 50, defval = 9)
sma_source = input.string(title="Oscillator MA Type",  defval="EMA", options=["SMA", "EMA"])
sma_signal = input.string(title="Signal Line MA Type", defval="EMA", options=["SMA", "EMA"])

// 绘图颜色
col_grow_above = input(#26A69A, "Above   Grow", group="Histogram", inline="Above")
col_fall_above = input(#B2DFDB, "Fall", group="Histogram", inline="Above")
col_grow_below = input(#FFCDD2, "Below Grow", group="Histogram", inline="Below")
col_fall_below = input(#FF5252, "Fall", group="Histogram", inline="Below")

// 计算逻辑
fast_ma = sma_source == "SMA" ? ta.sma(src, fast_length) : ta.ema(src, fast_length)
slow_ma = sma_source == "SMA" ? ta.sma(src, slow_length) : ta.ema(src, slow_length)
macd = fast_ma - slow_ma
signal = sma_signal == "SMA" ? ta.sma(macd, signal_length) : ta.ema(macd, signal_length)
hist = macd - signal

hline(0, "Zero Line", color=color.new(#787B86, 50), scale=scale.right)
// 关键修改：添加scale=scale.right让MACD使用右侧独立刻度
plot(hist, title="Histogram", style=plot.style_columns, color=(hist>=0 ? (hist[1] < hist ? col_grow_above : col_fall_above) : (hist[1] < hist ? col_grow_below : col_fall_below)), scale=scale.right)

额外说明 #

• 修改后的脚本中，RSI使用左侧刻度（0-100），MACD使用右侧刻度（适配其自身价格差值范围），两者互不干扰，在低价股上也能正常显示。
• 同时将指标标题改为RSI + MACD，更清晰反映合并后的功能。

内容的提问来源于stack exchange，提问作者rony sen