Ehlers Spearman Rank Indicator [CC]

The Spearman Rank Indicator was created by John Ehlers (Stocks and Commodities July 2020 pg 6) and this works well as a trend confirmation indicator. This is obviously his take on the Spearman Ranking Correlation and make sure to let me know what you think! Buy when the line turns green and sell when it turns red.

Let me know if there are any other indicators you want me to publish!