[R] bug in fft
Gabriel.FRICOUT at cmm.ensmp.fr
Thu Mar 28 09:37:34 CET 2002
I wanted to use th fft function for some convolution purposes and it seems
to have a bug:
I did the following:
transKern <- fft(kernel)
K <- fft(transKern,inverse=TRUE)/(dim(transKern)*dim(transKern))
and obtain something fully different from the nice function kernel !
Is that a known bug, and is there some alternative to fft function
NB: I used this function for kernel with depthX and depthY equal to 20 to
80, and everything worked pretty well (maybe!) except for the value 23 and
Thanks for any help!
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch
More information about the R-help