如何设置Pine Script仅显示单个红绿交易入场信号，避免连续重复

修改核心逻辑 #

新增状态变量记录历史信号方向，仅当信号方向切换时才输出新信号，避免同方向信号连续绘制。

完整修改后代码 #

//@version=5
indicator("Master Chef", shorttitle="Master Chef", overlay=true, timeframe="", timeframe_gaps=true)

//===== Moving Averages =====//
ma(source, length, type) =>
    type == "SMA" ? ta.sma(source, length) :
     type == "EMA" ? ta.ema(source, length) :
     type == "SMMA (RMA)" ? ta.rma(source, length) :
     type == "WMA" ? ta.wma(source, length) :
     type == "VWMA" ? ta.vwma(source, length) :
     na

show_ma1   = input(true   , "MA №1", inline="MA #1")
ma1_type   = input.string("SMA"  , ""     , inline="MA #1", options=["SMA", "EMA", "SMMA (RMA)", "WMA", "VWMA"])
ma1_source = input(close  , ""     , inline="MA #1")
ma1_length = input.int(20     , ""     , inline="MA #1", minval=1)
ma1_color  = input(#f6c309, ""     , inline="MA #1")
ma1 = ma(ma1_source, ma1_length, ma1_type)
plot(show_ma1 ? ma1 : na, color = ma1_color, title="MA №1")

show_ma2   = input(true   , "MA №2", inline="MA #2")
ma2_type   = input.string("SMA"  , ""     , inline="MA #2", options=["SMA", "EMA", "SMMA (RMA)", "WMA", "VWMA"])
ma2_source = input(close  , ""     , inline="MA #2")
ma2_length = input.int(50     , ""     , inline="MA #2", minval=1)
ma2_color  = input(#fb9800, ""     , inline="MA #2")
ma2 = ma(ma2_source, ma2_length, ma2_type)
plot(show_ma2 ? ma2 : na, color = ma2_color, title="MA №2")

show_ma3   = input(true   , "MA №3", inline="MA #3")
ma3_type   = input.string("SMA"  , ""     , inline="MA #3", options=["SMA", "EMA", "SMMA (RMA)", "WMA", "VWMA"])
ma3_source = input(close  , ""     , inline="MA #3")
ma3_length = input.int(100    , ""     , inline="MA #3", minval=1)
ma3_color  = input(#fb6500, ""     , inline="MA #3")
ma3 = ma(ma3_source, ma3_length, ma3_type)
plot(show_ma3 ? ma3 : na, color = ma3_color, title="MA №3")

show_ma4   = input(true   , "MA №4", inline="MA #4")
ma4_type   = input.string("SMA"  , ""     , inline="MA #4", options=["SMA", "EMA", "SMMA (RMA)", "WMA", "VWMA"])
ma4_source = input(close  , ""     , inline="MA #4")
ma4_length = input.int(200    , ""     , inline="MA #4", minval=1)
ma4_color  = input(#f60c0c, ""     , inline="MA #4")
ma4 = ma(ma4_source, ma4_length, ma4_type)
plot(show_ma4 ? ma4 : na, color = ma4_color, title="MA №4")

//===== RSI =====//
lenRSI = input.int(14, minval=1, title="Length")
src = input(close, "Source")
upRSI = ta.rma(math.max(ta.change(src), 0), lenRSI)
downRSI = ta.rma(-math.min(ta.change(src), 0), lenRSI)
rsi = downRSI == 0 ? 100 : upRSI == 0 ? 0 : 100 - (100 / (1 + upRSI / downRSI))

//===== DMI+/-=====//
lensig = input.int(14, title="ADX Smoothing", minval=1, maxval=50)
lenDMI = input.int(14, minval=1, title="DI Length")
upDMI = ta.change(high)
downDMI = -ta.change(low)
plusDMI = na(upDMI) ? na : (upDMI > downDMI and upDMI > 0 ? upDMI : 0)
minusDMI = na(downDMI) ? na : (downDMI > upDMI and downDMI > 0 ? downDMI : 0)
trur = ta.rma(ta.tr, lenDMI)
plus = fixnan(100 * ta.rma(plusDMI, lenDMI) / trur)
minus = fixnan(100 * ta.rma(minusDMI, lenDMI) / trur)
sum = plus + minus
adx = 100 * ta.rma(math.abs(plus - minus) / (sum == 0 ? 1 : sum), lensig)

//===== Defining parameters =====//
//Long
long = rsi >= 50 and rsi <= 90 and plusDMI > minusDMI and adx >= 25
//Short
short = rsi <= 50 and rsi >= 10 and plusDMI < minusDMI and adx >= 25

//===== 新增：信号去重逻辑 =====//
// 标记上一次触发的信号方向：1=多，-1=空，0=无历史信号
var int last_signal_dir = 0
// 仅当信号方向与上一次不同时才触发输出
long_trigger = long and last_signal_dir != 1
short_trigger = short and last_signal_dir != -1
// 更新信号方向标记
if long_trigger
    last_signal_dir := 1
if short_trigger
    last_signal_dir := -1

//===== Plot signals to chart =====//
//Long
plotshape(long_trigger, title = "Long", location = location.belowbar, color = color.rgb(0, 250, 0), size = size.tiny, style = shape.diamond)
//Short
plotshape(short_trigger, title = "Short", location = location.abovebar, color = color.rgb(250, 0, 0), size = size.tiny, style = shape.diamond)

//
//===== Create Alerts =====//
alertcondition(long_trigger or short_trigger, title = "Master Chef", message= "🍴 Signal: {{ticker}}, {{interval}}")

效果说明 #

修改后同方向信号仅会在首次触发时显示1次，直到反向信号出现后才会输出新的信号，不会连续出现多个同方向菱形标记。

内容的提问来源于stack exchange，提问作者EdmasterEd