Compute the support of a wavelet or cosine packet function.
This function is an S Version 3 generic (see Methods);
method functions can be written to handle specific
S Version 3 classes of data. Classes which already
have methods for this function include:
cosine.packet, cosine.packet.2d, wavelet.packet, wavelet.packet.2d
.
USAGE:
support(x)
REQUIRED ARGUMENTS:
x
an object of class
cosine.packet, cosine.packet.2d, wavelet.packet
or
wavelet.packet.2d.
VALUE:
for 1D objects, returns a vector of length two, representing an interval;
for 2D objects, returns a 2 by 2 matrix.