OPEN-SOURCE SCRIPT
Key Levels [@treypeng]

Draws horizontal lines for Daily, Hourly (1) and Weekly levels. Really handy to switch on quickly when scalping.
Light blue: Previous hour OHLC
Thick light blue: Previous hour Close / current hour Open
Dark blue: Yesterday OHLC
Thick dark blue: Yesterday Close / today Open
Purple: Weekly Open
It's a bit ugly, I'd prefer horizontal rays instead of lines stretching back across the chart but I couldn't figure out how to do this in PineScript. If I get it sorted, I'll publish an update.
Light blue: Previous hour OHLC
Thick light blue: Previous hour Close / current hour Open
Dark blue: Yesterday OHLC
Thick dark blue: Yesterday Close / today Open
Purple: Weekly Open
It's a bit ugly, I'd prefer horizontal rays instead of lines stretching back across the chart but I couldn't figure out how to do this in PineScript. If I get it sorted, I'll publish an update.
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.