[FieldTrip] ft_freqanalysis spitting out only NaNs

[Eelke Spaak]

Hi Jae,

Have you seen this?:
http://www.fieldtriptoolbox.org/faq/why_does_my_tfr_contain_nans/

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.

Cheers,
Eelke

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
>
> Confidentiality Notice:
> E-mail may be intercepted between the sender and the receiver and is
> therefore neither secure nor confidential. Your continued use of e-mail
> communication confirms that you accept this risk. If this is an urgent
> matter, please contact me at the phone number provided. This e-mail,
> including any attachments, is for the sole use of the intended recipient(s)
> and may contain private, confidential, and privileged information.
> Any unauthorized review, use, disclosure or distribution is prohibited. If
> you are not the intended recipient or this information has been
> inappropriately forwarded to you, please contact the sender by reply
> e-mail and destroy all copies of the original.
>
> _______________________________________________
> fieldtrip mailing list
> https://mailman.science.ru.nl/mailman/listinfo/fieldtrip
> https://doi.org/10.1371/journal.pcbi.1002202