Relative StrengthRelative strength is a ratio between two assets, most often a stock and a market average (index). This implementation uses the method described here and the second method described here to calculate its value: "To calculate the relative strength of a particular stock, divide the percentage change over some time period by the percentage change of a particular index over the same time period". This indicator oscillates around zero. If the value is greater than zero, the investment has been relatively strong during the selected period; if the value is less than zero, the investment has been relatively weak. The period and the comparative symbol can be set in the settings for the indicator (the defaults are 50 and SPX), there you can also find an option to turn on a moving average.
Relative Strength Comparison
IBD Relative strengtHThis code is to replicate the relative strength indicator as used on investors.com (on lists like the IBD 50, big cap 20 etc).
Let me know if any issues / any updates wanted.
Currency StrengthRepublished: 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
