Add Bollinger Bands to Chart
Add Bollinger Bands to current chart.
addBBands(n = 20, sd = 2, maType = "SMA", draw = 'bands', on = -1)
n |
number of moving average periods |
maType |
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 |
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.
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.
Jeffrey A. Ryan
See bollingerBands in TTR written by Josh Ulrich
## Not run: addBBands() ## End(Not run)
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