Bollinger Bands Width Expansion Identifier

Find out if the Bollinger Band Width has rapidly expanded compared to the N number of previous periods.

I've written a function: 'bbw_expansion' that performs this check so that it can be incorporated in other projects of mine.

Example: bbw_expansion( bbw , 5, 1.2) will return 'true' if 'bbw' is 20% greater (or more) compared to the last 5 bbw periods.

The function returns: 'true' or 'false'
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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