It turned out not to be that easy to plot the close of the previous week in hourly or daily charts. In my first experiments things went wrong on Friday or intraday if you simply use the security function. So here is the thing with an algorithm that guaranties the correct value.
Open-source script
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules.
You can favorite it to use it on a chart.
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