Fourier decomposition in Matlab

1. What is Fourier command in MATLAB?
2. How to use fft2 command in MATLAB?
3. How does MATLAB calculate Fourier spectrum?

What is Fourier command in MATLAB?

fourier( f ) returns the Fourier Transform of f . By default, the function symvar determines the independent variable, and w is the transformation variable. example. fourier( f , transVar ) uses the transformation variable transVar instead of w .

How to use fft2 command in MATLAB?

Y = fft2( X ) returns the two-dimensional Fourier transform of a matrix using a fast Fourier transform algorithm, which is equivalent to computing fft(fft(X). '). ' . If X is a multidimensional array, then fft2 takes the 2-D transform of each dimension higher than 2.

How does MATLAB calculate Fourier spectrum?

In MATLAB®, the fft function computes the Fourier transform using a fast Fourier transform algorithm. Use fft to compute the discrete Fourier transform of the signal. y = fft(x); Plot the power spectrum as a function of frequency.