Average Bollinger band width

[murthymsr]

This is my first attempt to code an indicator.

I want to save the SMA of the Bollinger band width of an instrument over 50 periods to a double.

double BBWAverage = SMA((Bollinger(2,20).Upper - Bollinger(2,20).Lower), 50)

gives me error.

Help please !
Thanks in advance.

murthymsr

[NinjaTrader_RyanM1]

Hello murthymsr,

The SMA is expecting a data series input. You will have to convert the difference between the Bollingers into a data series. There is a tutorial available on data series available here:

http://www.ninjatrader.com/support/helpGuides/nt7/intermediate___historical_cust.htm

Setup the data series according to that example. It needs to be declared in Variable Region and Instantiated in Initialize(). The data series is then set in OnBarUpdate()

myDataSeries.Set(Bollinger(2,20).Upper[0] - Bollinger(2,20).Lower[0]);