draw.wd {wavethresh} | R Documentation |
Draw mother wavelet or scaling function associated with wd object.
Description
This function draws the mother wavelet or scaling function associated with a wd.object
.
Usage
## S3 method for class 'wd'
draw(wd, ...)
Arguments
wd |
The |
... |
Additional arguments to pass to the |
Details
This function extracts the filter component from the wd
object (which is constructed using the filter.select
function) to decide which wavelet to draw. Once decided the draw.default
function is used to actually do the drawing.
Value
If the plot.it
argument is set to TRUE then nothing is returned. Otherwise, as with draw.default
, the coordinates of what would have been plotted are returned.
RELEASE
Version 2 Copyright Guy Nason 1993
Note
If the plot.it
argument is TRUE
(which it is by default) a plot of the mother wavelet or scaling function is plotted on the active graphics device.
Author(s)
G P Nason
See Also
filter.select
, wd.object
, draw.default
.
Examples
#
# Generate some test data
#
test.data <- example.1()$y
## Not run: ts.plot(test.data)
#
# Now do the discrete wavelet transform of the data using the Daubechies
# least-asymmetric wavelet N=10 (the default arguments in
# wd).
#
tdwd <- wd(test.data)
#
# What happens if we try to draw this new tdwd object?
#
## Not run: draw(tdwd)
#
# We get a picture of the wavelet that did the transform
#