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draw.mwd
Draws a wavelet or scaling function used to compute an `mwd' object
DESCRIPTION
Draws picture of one wavelet or scaling function
associated with the multiple wavelet decomposition object.
mwd object.
USAGE
draw.mwd(mwd, phi = 0, psi = 0, return.funct = F, ...)
REQUIRED ARGUMENTS
- mwd
- The mwd class object whose associated wavelet
or scaling function you wish to draw.
OPTIONAL ARGUMENTS
-
phi
- If
phi is non-zero then the `phi'-th scaling function of
the wavelet family used for mwd will be plotted.
phi must be between 0 and mwd$filter$nphi.
-
psi
- If
psi is non-zero then the `psi'-th wavelet
the multiwavelet family used for mwd will be plotted.
psi must be between 0 and mwd$filter$npsi.
-
return.funct
- If true then the vector used as phi/psi in the plot command
is returned.
- ...
- Additional arguments to pass to the
plot function
VALUE
If the return.funct argument is set to TRUE then
the function values in the plot are returned otherwise NULL
is returned.
SIDE EFFECTS
If the return.funct argument is FALSE
a plot of the mother wavelet or scaling function is
plotted on the active graphics device.
DETAILS
It is usual to specify just one of phi and psi.
IF neither phi nor psi are specified then phi=1 is the default.
An error is generated if both phi=0 and psi=0 or if both are nonzero.
RELEASE
Version 3.9.6 (Although Copyright Tim Downie 1995-6).
SEE ALSO
accessC.mwd,
accessD.mwd,
mfirst.last,
mfilter.select,
mwd,
mwd object,
mwr,
plot.mwd,
print.mwd,
putC.mwd,
putD.mwd,
summary.mwd,
threshold.mwd,
wd,
wr.mwd.
EXAMPLES
#
# Do a multiple wavelet decomposition on vector: ynoise
#
ymwd <- mwd(ynoise,filter.type="Geronimo")
#
# Draw a picture of the second Geronimo wavelet.
#
draw(ymwd,psi=2)