Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Group: Mathematical Functions
Topic: Fourier and Wavelet transforms
See also: invfft

Function: fft
Description: fft computes the Fast Fourier Transformation of a complex vector.

Usage: y = fft (x)
Input:
x p x 2 matrix
Output:
y p x 2 matrix

Note:

Example:



randomize(0)

x = normal(4)

y = #(0,0,0,0)

z=fft(x~y)  

invfft(z)

Result:



Contents of invfft

[1,] -0.21293        0 

[2,]  -1.0078 -9.9048e-17 

[3,]   1.9502        0 

[4,]  -1.3052  9.9048e-17

Group: Mathematical Functions
Topic: Fourier and Wavelet transforms
See also: invfft

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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