My baseline study lets you compare price to the previous days close. You can select the time frame for this baseline. I have included the ability to use a custom period length or your own anchor value. Custom anchor values are great for comparing the price to your cost average. The features I have included are bar color and background color.
I liked the idea of the 'baseline" chart but I didnt like the implementation.
Enjoy
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plot.style_stepline_diamond kind of sucks
Release Notes
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turns out you dont need to specify timeframe's options. Enjoy the extra anchor periods.