Positive Volume Index + Negative Volume Index

This is my version of plotting the classic Positive Volume Index and Negative Volume Index. They can be wildly different sometimes and not very helpful with entry and exit points but I hope this helps clearly identify buy and sell signals. Buy when the indicator is green and sell when it is red

This was a special request so let me know when you want more scripts from me!

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updated it so the signal length is able to be changed

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updated to make it consistent with my other indicators

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fixed issue with default resolution

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Updated to v5