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Spira Alligator
This is an trend-following pullback system inspired by Bill Williams’ Alligator, but built to operate as a purely mechanical signal system. It’s designed for traders who want to:
Follow the main trend
Buy or sell on pullbacks back into the trend
Use simple, visual logic without having to interpret too many “subtle” patterns
How it works
The Alligator lines (Lips, Teeth, Jaw) visualize trend direction and strength.
A separate trend line (default EMA 144) is used as a long-term trend filter.
The system detects a pullback back to the Teeth (Lips crosses once against the trend and then crosses back), but only when price is on the correct side of the trend line.
When the conditions are met, it prints:
A BUY signal when price is above the trend line
A SELL signal when price is below the trend line
How to use it
Add Spira Alligator to TradingView and enable the line + signal display.
Use BUY signals as candidate entries in an uptrend (price above the trend line).
Use SELL signals as candidate entries in a downtrend (price below the trend line).
Use the background color to quickly spot when an active signal event occurs.
This logic is meant as a starting point—add your own risk management (stop-loss, take-profit, confluence with other indicators) as needed.
Important notes
This is not the classic Alligator approach, but a systematic variation that produces clear, mechanical signals.
It’s made for testing and experimentation, and is especially suitable for trend-following traders who prefer simple but robust logic.
Follow the main trend
Buy or sell on pullbacks back into the trend
Use simple, visual logic without having to interpret too many “subtle” patterns
How it works
The Alligator lines (Lips, Teeth, Jaw) visualize trend direction and strength.
A separate trend line (default EMA 144) is used as a long-term trend filter.
The system detects a pullback back to the Teeth (Lips crosses once against the trend and then crosses back), but only when price is on the correct side of the trend line.
When the conditions are met, it prints:
A BUY signal when price is above the trend line
A SELL signal when price is below the trend line
How to use it
Add Spira Alligator to TradingView and enable the line + signal display.
Use BUY signals as candidate entries in an uptrend (price above the trend line).
Use SELL signals as candidate entries in a downtrend (price below the trend line).
Use the background color to quickly spot when an active signal event occurs.
This logic is meant as a starting point—add your own risk management (stop-loss, take-profit, confluence with other indicators) as needed.
Important notes
This is not the classic Alligator approach, but a systematic variation that produces clear, mechanical signals.
It’s made for testing and experimentation, and is especially suitable for trend-following traders who prefer simple but robust logic.
開源腳本
秉持TradingView一貫精神，這個腳本的創作者將其設為開源，以便交易者檢視並驗證其功能。向作者致敬！您可以免費使用此腳本，但請注意，重新發佈代碼需遵守我們的社群規範。
Spira Scalper
免責聲明
這些資訊和出版物並非旨在提供，也不構成TradingView提供或認可的任何形式的財務、投資、交易或其他類型的建議或推薦。請閱讀使用條款以了解更多資訊。
開源腳本
秉持TradingView一貫精神，這個腳本的創作者將其設為開源，以便交易者檢視並驗證其功能。向作者致敬！您可以免費使用此腳本，但請注意，重新發佈代碼需遵守我們的社群規範。
Spira Scalper
免責聲明
這些資訊和出版物並非旨在提供，也不構成TradingView提供或認可的任何形式的財務、投資、交易或其他類型的建議或推薦。請閱讀使用條款以了解更多資訊。