FFT doesn't work - Ai.Associates

KNIME Extensions
1

Hi all,

I am new to KNIME and I am trying to apply an FFT to my set of Data extrapolated with Column Filter. The output of C.F. is correct but if I apply an FFT the output remains the same as after the column filter. It seems that the FFT doesn’t work.

Do you have suggestions?

2

Hi,

FFT node that you have used expects a row-structured data, i.e. frequencies are extracted for each row not for each column. Here is a basic example demonstrating usage of the node together wit hthe shared component that implements the same functionality using python:
https://kni.me/w/W3xa0kzmhN8cWk-8

Cheer,
Mischa

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Thanks you it works!

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