OPEN-SOURCE SCRIPT
Updated Currency Strength

Republished: The original script violated house rules by including an external link to Backtest Rookies.
Background
The currency strength indicator takes up to 4 forex pairs and calculates the average strength across all pairs. The indicator uses the pair's daily percentage change to calculate the overall strength. For flexibility, it can accept any instrument as an input. This means you can use multiple instances to track various currency strengths. It was designed with the major pairs in mind but there is no reason why it cannot be used for other FX pairs.
Note: The indicator defaults to GBP. When setting it up for other currencies, be sure to flag whether the currency is a counter currency or not.
The code is provided free and open source. Please modify it as you see fit.
Screenshots
Defaults with Annotation

Yen strength beating pound strength

Opposing Trends

Background
The currency strength indicator takes up to 4 forex pairs and calculates the average strength across all pairs. The indicator uses the pair's daily percentage change to calculate the overall strength. For flexibility, it can accept any instrument as an input. This means you can use multiple instances to track various currency strengths. It was designed with the major pairs in mind but there is no reason why it cannot be used for other FX pairs.
Note: The indicator defaults to GBP. When setting it up for other currencies, be sure to flag whether the currency is a counter currency or not.
The code is provided free and open source. Please modify it as you see fit.
Screenshots
Defaults with Annotation
Yen strength beating pound strength
Opposing Trends
Release Notes
Bugfix Fix for NA values that recently started to appear.
Open-source script
In true TradingView spirit, the creator of this script has made it open-source, so that traders can review and verify its functionality. Kudos to the author! While you can use it for free, remember that republishing the code is subject to our House Rules.
Disclaimer
The information and publications are not meant to be, and do not constitute, financial, investment, trading, or other types of advice or recommendations supplied or endorsed by TradingView. Read more in the Terms of Use.
Open-source script
In true TradingView spirit, the creator of this script has made it open-source, so that traders can review and verify its functionality. Kudos to the author! While you can use it for free, remember that republishing the code is subject to our House Rules.
Disclaimer
The information and publications are not meant to be, and do not constitute, financial, investment, trading, or other types of advice or recommendations supplied or endorsed by TradingView. Read more in the Terms of Use.