convolve2D(x, y, conj = TRUE, type = c("circular", "open"))TRUE, take the complex conjugate
before back-transforming (default, and used for usual convolution)."circular", "open"
(beginning of word is ok). For circular, the two sequences
are treated as circular, i.e., periodic. For open and filter, the se
convolve made by replacing
fft with mvfft in a few places. It would be nice to
submit this to the R Developers for inclusion.convolve