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Extreme Channel(lir)

extreme channel is a powerful indicator which plot the extremes according to previous period input,
the default value is D which means the channel is plotted according to previous day and is constant until next day,
the input can be changed to minutes,W,M and ...
https://www.tradingview.com/x/zXuigK2C/
https://www.tradingview.com/x/TB2GmiyW/
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