PineScript v1挤压动量指标（SQZMOM_LB）转v5及添加买卖预警条件技术求助

Got it, let's tackle this problem for you. I'll cover two approaches: converting the v1 indicator to Pine Script v5 (the modern, supported version) with your requested alert conditions, and also modifying the original v1 code to add those alerts directly, in case you need to stick with the older version.

Solution 1: Pine Script v5 Conversion with Alert Conditions #

Pine Script v5 has cleaner syntax and better documentation, so this is the recommended approach. I've converted the original code, updated all v1 functions to their v5 equivalents, and added alert conditions that trigger when the momentum area turns lime (buy) or red/maroon (sell).

//@version=5
indicator(shorttitle = "SQZMOM_LB", title="Squeeze Momentum Indicator", overlay=false)

// Inputs
length = input.int(20, title="BB Length")
mult = input.float(2.0, title="BB MultFactor")
lengthKC = input.int(20, title="KC Length")
multKC = input.float(1.5, title="KC MultFactor")
useTrueRange = input.bool(true, title="Use TrueRange (KC)")

// Calculate Bollinger Bands (BB)
source = close
basis = ta.sma(source, length)
dev = mult * ta.stdev(source, length)
upperBB = basis + dev
lowerBB = basis - dev

// Calculate Keltner Channels (KC)
ma = ta.sma(source, lengthKC)
range = useTrueRange ? ta.tr : (high - low)
rangema = ta.sma(range, lengthKC)
upperKC = ma + rangema * multKC
lowerKC = ma - rangema * multKC

// Squeeze status
sqzOn = (lowerBB > lowerKC) and (upperBB < upperKC)
sqzOff = (lowerBB < lowerKC) and (upperBB > upperKC)
noSqz = not sqzOn and not sqzOff

// Momentum value
val = ta.linreg(source - ta.avg(ta.avg(ta.highest(high, lengthKC), ta.lowest(low, lengthKC)), ta.sma(close, lengthKC)), lengthKC, 0)

// Color logic
bcolor = val > 0 ? (val > val[1] ? color.lime : color.maroon) : (val < val[1] ? color.red : color.new(color.green, 0))
scolor = noSqz ? color.blue : sqzOn ? color.black : color.gray

// Plotting
plot(val, color=bcolor, style=plot.style_area, linewidth=4)
plot(0, color=scolor, style=plot.style_cross, linewidth=2)

// Alert Conditions
// Buy alert: Momentum area turns lime (bullish momentum increasing)
alertcondition(bcolor == color.lime, title="Buy Alert", message="Squeeze Momentum: Bullish signal (lime color)")
// Sell alert: Momentum area turns red or maroon (bearish momentum increasing)
alertcondition(bcolor == color.red or bcolor == color.maroon, title="Sell Alert", message="Squeeze Momentum: Bearish signal (red/maroon color)")

Key Notes for v5 Version: #

• Replaced study() with indicator() (v5's standard declaration)
• Updated input types to v5-specific input.int()/input.float()/input.bool() for better type safety
• Prefixed all built-in functions with ta. (v5 requires explicit namespace for technical analysis functions)
• Adjusted color handling to use v5's color object
• Added clear alert conditions that trigger when the momentum area matches your target colors

Solution 2: Add Alert Conditions to Original Pine Script v1 Code #

If you need to keep using the v1 version, here's the modified code with alert conditions added. The core logic stays the same, we just add alertcondition() calls to match your color-based triggers.

study(shorttitle = "SQZMOM_LB", title="Squeeze Momentum Indicator", overlay=false)
length = input(20, title="BB Length")
mult = input(2.0,title="BB MultFactor")
lengthKC=input(20, title="KC Length")
multKC = input(1.5, title="KC MultFactor")
useTrueRange = input(true, title="Use TrueRange (KC)", type=bool)
// Calculate Bollinger Bands (BB)
source = close
basis = sma(source, length)
dev = multKC * stdev(source, length)
upperBB = basis + dev
lowerBB = basis - dev
// Calculate Keltner Channels (KC)
ma = sma(source, lengthKC)
range = useTrueRange ? tr : (high - low)
rangema = sma(range, lengthKC)
upperKC = ma + rangema * multKC
lowerKC = ma - rangema * multKC
sqzOn = (lowerBB > lowerKC) and (upperBB < upperKC)
sqzOff = (lowerBB < lowerKC) and (upperBB > upperKC)
noSqz = (sqzOn == false) and (sqzOff == false)
val = linreg(source - avg(avg(highest(high, lengthKC), lowest(low, lengthKC)),sma(close,lengthKC)), lengthKC,0)
bcolor = iff( val > 0, iff( val > nz(val[1]), lime, maroon), iff( val < nz(val[1]), red, green))
scolor = noSqz ? blue : sqzOn ? black : gray
plot(val, color=bcolor, style=area, linewidth=4)
plot(0, color=scolor, style=cross, linewidth=2)

// Added Alert Conditions
alertcondition(bcolor == lime, title="Buy Alert", message="Squeeze Momentum: Buy Signal (Lime Color)")
alertcondition(bcolor == red or bcolor == maroon, title="Sell Alert", message="Squeeze Momentum: Sell Signal (Red/Maroon Color)")

Bonus: Avoid Repeated Alerts #

If you want to trigger alerts only when the color changes (not every bar the color stays the same), modify the alert conditions to check for a transition:

// Buy alert only when color switches to lime
alertcondition(bcolor == lime and bcolor[1] != lime, title="Buy Alert (New Signal)", message="Squeeze Momentum: New Bullish Signal")

// Sell alert only when color switches to red/maroon
alertcondition((bcolor == red or bcolor == maroon) and (bcolor[1] != red and bcolor[1] != maroon), title="Sell Alert (New Signal)", message="Squeeze Momentum: New Bearish Signal")

内容的提问来源于stack exchange，提问作者AlexSP