[FieldTrip] ft_freqanalysis spitting out only NaNs

Eelke Spaak e.spaak at donders.ru.nl
Tue Sep 3 10:24:56 CEST 2019

Hi Jae,

Have you seen this?:

In short, if you don't have data around the appropriate time points
(1s, 51s, 101s, etc.), you will get NaNs. I suspect perhaps the units
of your cfg.toi might be wrong? Note that FieldTrip will interpret
them as seconds.


On Mon, 2 Sep 2019 at 18:15, Jae Moon <jmoon at hollandbloorview.ca> wrote:
> Hi everyone,
> I’m wondering if anyone has been confronted with the same issue of ft_freqanalysis spitting out only NaNs in the output. Here is the code I implemented:
> cfg=[];
> cfg.method    = 'wavelet';
> cfg.output    = 'pow';
> cfg.foilim = [1 60];
> cfg.toi = [1:50:1200];
> cfg.pad='nextpow2';
> freq13=ft_freqanalysis(cfg,data13);
> freq24=ft_freqanalysis(cfg,data24);
> No matter what method I use or whichever output I use, I  keep getting NaNs, and therefore, my granger causality analysis only spits out NaNs as well.
> Your help is very much appreciated!
> Best,
> Jae
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