This indicator give us the relation between open and close state via log method
close is green line,open state is black line
bullish is when open above 0 = green color
bearish is when bellow zero =red color
blue color is signal line
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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