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draw.wd

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

draw.wd(wd, ...)

REQUIRED ARGUMENTS

wd: The wd class object whose associated wavelet or scaling function you wish to draw.

OPTIONAL ARGUMENTS

...: Additional arguments to pass to the draw.default function which does the drawing. In particular, arguments can be set to choose between drawing the mother wavelet and scaling function, to set the resolution of the plot, to choose between drawing one and two dimensional pictures.

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.

SIDE EFFECTS

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.

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.

RELEASE

EXAMPLES

#
# Generate some test data
#
test.data <- example.1()$y
tsplot(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?
#
draw(tdwd)

#
# We get a picture of the wavelet that did the transform
#