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After the first button is clicked, png, jpg, tif and pdf formats can be saved.
I tried to save it in pdf format, and then use an online converter to convert it to epg format. Finally, the picture was inserted into the paper, but it also failed.
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After the second button was clicked, a normal picture appeared on my clipboard. I use an online converter to convert pictures in png mode to eps mode. Inserted into my thesis, but failed.
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After clicking the third button, there is nothing on the clipboard.
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so,How to save the graph after FFT in powergui as "eps" or "svg" format, and direkt insert into the paper.