addBBands(n = 20, ma = "SMA", sd = 2, draw = 'bands', on = -1)
Arguments
n
number of moving average periods
ma
type of moving average to be used
sd
number of standard deviations
draw
indicator to draw: bands, percent, or width
on
which figure area of chart to apply to
Value
Bollinger Bands will be drawn, or scheduled to be drawn,
on the current chart. If draw is either percent or width
a new figure will be added to the current TA figures charted.
A chobTA object will be returned silently.
Details
The primary addition to this function call over the TTR
version is in the draw argument. bands will draw
standard Bollinger Bands, percent will draw Bollinger %b
and width will draw Bolinger Bands Width. The last two will
be drawn in new figure regions.
See bollingerBands in TTR for specific details
as to implementation and references.