BollingerBandWidth bug

[michaelsh]

I think I found possible bug in the default implementation of BollingerBandWidth indicator.

In the code:

Plot0.Set((Bollinger(deviation,Period).Upper[0] - Bollinger(deviation,Period).Lower[0])/SMA(20)[0]);

It appears to me that 20 is a hardcoded period.
Code should probably be:

Plot0.Set((Bollinger(deviation,Period).Upper[0] - Bollinger(deviation,Period).Lower[0])/SMA(Period)[0]);

[NinjaTrader_PatrickH]

Hello michaelsh,

Thank you for your post.

The 'BollingerBandWidth' indicator is not a pre-loaded indicator in NinjaTrader. You will need to contact the developer of the indicator for information on their calculation logic.

However, it appears you can edit this indicator on your end if you wish.

Please let me know if I may be of further assistance.

[michaelsh]

Thanks, Patrik,
You are right, this is custom indicator.
I thought it is pre-loaded. My apologies