LTspice: THD error list to FFT display

[Sylvi]

Hi

I use LTspice for circuit simulations and THD tests. Is there a way to convert the data of the error log showing the amplitude of the ten harmonics into a spectral or FFT display?
Actually, I know it is done but how?

Thanks

[SiliconWizard]

You can get FFT display from the waveform viewer: right-click -> pop-up menu -> View -> FFT
Then you can select the waveform you want to perform an FFT on and additional FFT options (window, nb of points...)

[Sylvi]

So simple!
Thanks 

[SiliconWizard]

So simple!
Thanks 

 
Don't forget to select an appropriate FFT window depending on your needs, as the default is no window (thus a rectangular window) which would be appropriate only if you dealt with an integer number of periods of signal, which is rarely the case.