Function

Description

fft

Discrete Fourier transform.

fft2

Twodimensional discrete Fourier transform.

fftn

Ndimensional discrete Fourier transform.

ifft

Inverse discrete Fourier transform.

ifft2

Twodimensional inverse discrete Fourier transform.

ifftn

Ndimensional inverse discrete Fourier transform.

abs

Magnitude.

angle

Phase angle.

unwrap

Unwrap phase angle in radians.

fftshift

Move zeroth lag to center of spectrum.

cplxpair

Sort numbers into complex conjugate pairs.

nextpow2

Next higher power of two.
