Convolution and Up Sampling Operator

DESCRIPTION:

Convolution and up sampling operator.

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:
wp.crystal .

USAGE:

convup(x, filter, boundary, odd=F, convfast=F) 

REQUIRED ARGUMENTS:

x
a numeric vector or an object of wp.crystal.
filter
a vector of filter coefficients. When x is an object of wp.crystal, this argument can be optional.
boundary
a character string giving the name of the boundary rule, e.g., "periodic". See convdown for details. When x is an object of wp.crystal, this argument can be optional, the default is attr(x, "boundary").

OPTIONAL ARGUMENTS:

odd
logical flag indicating if the outcome vector should be of odd length. See details below.
convfast
logical flag indicating if fast algorithm should be used.

VALUE:

if odd=FALSE, then a vector of length 2n, where n=length(x), is returned; otherwise, a vector of length 2n-1 is returned.

DETAILS:

SEE ALSO:

, , .