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Fast Fourier Transform in netcdf files

Added by Michael de Paula about 2 months ago

Dear colleagues,

Would like to know please how to plot fast Fourier transforms (FFT) from a netcdf file (.nc) that I downloaded from the c3s (sea surface height, temperature, salinity and currents). I tried several times and I couldn’t, because I get the following message:

"This operator needs fields with complex numbers!"

In advance I apologize sincerely if I posted my question in the wrong place. Any answer will be appreciated.

Thank you very much.


Replies (1)

RE: Fast Fourier Transform in netcdf files - Added by Estanislao Gavilan about 2 months ago

Hi Michael,

I think you are using the function fourier. I think the command fourier only accepts complex fields. For real input you need to use retocomplex.

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