How to carry out FFT analysis from recorded *.psdata

[XavierPico]

Hello,
I'd like to re-compute FFT analysis on the recorded waveform (*.psdata).
Is there some body who knows a solution with Picoscope 6?
Many thanks in advance
Warm regards
Xavier

[Martyn]

If the existing psdata file is of a spectrum plot then you can use the options button

if it is a time domain plot then you can add a spectrum view and use the options button

[XavierPico]

Many thanks for Martyn to send a clear and complete response!
Warm regards
Xavier