error while using complex2real

Question

Tricky 2011-11-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/22454-error-while-using-complex2real

采纳的回答： Wayne King

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I'm trying to extract the 'real' values of amplitudes and phases from the fft output A1

Y=complex2real(A1);

Where A1 is containing the Fourier transform values of a image as 1323*1 of single type.

its showing error like this ??? Undefined function or method 'complex2real' for input arguments of type'single'

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Answer 1

Wayne King 2011-11-28

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/22454-error-while-using-complex2real#answer_29535

在 MATLAB Online 中打开

complex2real is not a MATHWORKS' function. That error message is indicating that MATLAB does not know anything about that function. If that is a function someone has written, then make sure it is on your MATLAB path. Use addpath() or pathtool() to add the folder where that function lives.

If you want the polar form of the Fourier coefficients, you can use