FreeMat
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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
.