This script plots the ratio between a ticker and the selected index. Currently, I have US equities indexes listed + BTC. It's a great way to check for relative strength, determine if absolute highs relative to the ratio are being made, etc.
Additionally, optional comparison of the RSI is included. I was just testing something out but figured I'd leave in here because why not. If you use this, enable the 1.0 line.
Script is a bit slow, will try to optimize eventually.