fftn

N-Dimensions fast Fourier transform.

📝Syntax

Y = fftn(X)
Y = fftn(X, sz)

📥Input Arguments

Parameter	Description
X	a vector, matrix or N-D array (double, single, integer, logical).
sz	a multidimensional array

📤Output Arguments

Parameter	Description
Y	a vector, matrix, N-D array: frequency domain representation.

📄Description

Y = fftn(X, sz) pads X with zeros, or truncates X, to create a multidimensional array of size sz before performing the transform.

The size of the result Y is sz.

Y = fftn(X) performs the N-dimensional fast Fourier transform.

The result Y is the same size as X.

💡Examples

f = zeros(5, 5);
f(1:5,4:5) = 1;
Y = ifftn(fftn(f));

🔗See Also

🕔Version History

Version	Description
1.0.0	initial version