Log Bollinger Bands %BB Oscillator [Krypt]

This indicator is almost identical to "Bollinger Bands %BB" except its calculations are performed in logspace and it adds an optional EMA line (after LazyBear's idea).
版本注释: different formula for EMA (separate EMAs for numerator and denominator) -- tends to result in earlier sell signals

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.