|
FreeMat
|
Section: Transforms/Decompositions
Computes the DFT of an N-dimensional numerical array along all dimensions. The general syntax for its use is
y = fftn(x)
which computes the same-size FFTs for each dimension of x. Alternately, you can specify the size vector
y = fftn(x,dims)
where dims is a vector of sizes. The array x is zero padded or truncated as necessary in each dimension so that the output is of size dims. The fftn function is implemented by a sequence of calls to fft.