R is pretty smart about duplicating only when necessary. That is,
arguments passed to a function are copy-on-write. Also, I think (someone
more knowledgeable please correct if I'm wrong) it may be better to use
the data frame, which is just a list internally, because if you only
modify one column,
On Thu, 2010-05-27 at 19:08 -0400, Prof. John C Nash wrote:
> I would like to have a function that would wait either until a specified
> timeout (in
> seconds preferably) or until a key is pressed. I've found such a function
> quite useful in
> other programming environments in setting up dialo
On Thu, 2010-05-27 at 19:08 -0400, Prof. John C Nash wrote:
> I would like to have a function that would wait either until a specified
> timeout (in
> seconds preferably) or until a key is pressed. I've found such a function
> quite useful in
> other programming environments in setting up dialogs
The fft in R has the following C call chain
file purpose
src/main/names.c links R function "fft" to do_fft
src/main/fourier.cdo_fft calls fft_factor, fft_work
src/appl/fft.chome of fft_factor, fft_work
If you want to use the fft at a low level, yo
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