Hi, I finally coded a volatility index I'm proud of !
The formula is quite simple : It's the inverse of the maximal volatility that a candle can have
We find 2 lines : the white one, the volatility index ; the delayed index
The yellow area highlight the moment where we have more volatility the gray one is when the market is quiet, it's not recommended to take decision in these moments
when the index is rising, there are less volatility when the index is decreasing, the volatility is increasing