[FieldTrip] fieldtrip Digest, Vol 153, Issue 1

Tue Aug 1 12:13:19 CEST 2023

Good morning,
Thank you for the suggestion, I have now tried using 270 instead of -90 with cfg.rotate and the issue still persists.
Kind regards,

Petar Atanasov

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Subject: fieldtrip Digest, Vol 153, Issue 1

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Today's Topics:

   1. Inquiry regarding "cfg.rotate" (Petar Atanasov)
   2. Re: Inquiry regarding "cfg.rotate" (Tom Marshall)

----------------------------------------------------------------------

Message: 1
Date: Tue, 1 Aug 2023 07:30:00 +0000
From: Petar Atanasov <PAtanasov at uclan.ac.uk>
To: "fieldtrip at science.ru.nl" <fieldtrip at science.ru.nl>
Subject: [FieldTrip] Inquiry regarding "cfg.rotate"
Message-ID:
        <VI1PR03MB2895CE5460B423241F88E4CEF205A at VI1PR03MB2895.eurprd03.prod.outlook.com>

Content-Type: text/plain; charset="iso-8859-1"

Good evening,
I am currently analysing some co-registered eye-tracking and electroencephalography fixation-related potential (FRP) data.
I am using MATLAB 2022b but I have also replicated the issue with MATLAB 2020b.
For the pre-processing of the data, I have used EEGLAB 2023.0 as well as the EYE-EEG 0.99 and Unfold.

I have been trying to plot topographies and waveforms via the "ft_multiplotER" and the "ft_topoplotER" functions, such that my frontal electrodes are at the top of the image and the occipital electrodes are at the bottom of the image.
However, when I plot the data both with the default as well as with "-90" or "90" degree rotation via "cfg.rotate", my images always show frontal electrodes on the right and occipital electrodes on the left.

When I plot the channel locations with the same coordinates in EEGLAB I get the images with the correct orientation for all electrodes.

Can you please advice on how I may be able to rotate my images correctly and why is it that "cfg.rotate" may not be working as expected?

I am happy to provide further information as needed.
Thank you in advance for your feedback and assistance with my inquiry.
Kind regards,

Petar Atanasov
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Message: 2
Date: Tue, 1 Aug 2023 08:50:44 +0000
From: Tom Marshall <tom.marshall at psy.ox.ac.uk>
To: FieldTrip discussion list <fieldtrip at science.ru.nl>
Subject: Re: [FieldTrip] Inquiry regarding "cfg.rotate"
Message-ID: <5DF104D5-14E8-41F4-A58A-620A2DF6CC75 at psy.ox.ac.uk>
Content-Type: text/plain; charset="utf-8"

Hi Petar,

If you replace ‘-90’ with ‘270’, does that produce the rotation you want?

Just a hunch, based on Robert’s suggestion in https://urldefense.com/v3/__https://eur01.safelinks.protection.outlook.com/?url=https*3A*2F*2Furldefense.com*2Fv3*2F__https*3A*2F*2Fgithub.com*2Ffieldtrip*2Ffieldtrip*2Fissues*2F1674__*3B!!HJOPV4FYYWzcc1jazlU!60QKCY0R3GJgesY3D65R61rkvsPCyUDVpHSnavjhWSDCpQ2Vu-BW3lZhV1WPd6hmlTyBG01GQtvtkIb4n2sca54o-uJkN7VJ*24&data=05*7C01*7Cpatanasov*40uclan.ac.uk*7Cd770fb746c5240beed0608db92769b60*7Cebf69982036b4cc4b2027aeb194c5065*7C0*7C0*7C638264810352946528*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=LZCZUOEaZJ4h0qqI4ebvFewBCE8dJ3uPnhTBZfjTrnY*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUl!!HJOPV4FYYWzcc1jazlU!8iTHHIwQdSFfHeM4kISO2yK0F6SHSGWcyQuoRnsy-cp-IzOyAJyWoFoY1zdweZTiwvPn_qyO3DQLvEZgjgPdt3-M53U$ <https://urldefense.com/v3/__https://github.com/fieldtrip/fieldtrip/issues/1674__;!!HJOPV4FYYWzcc1jazlU!60QKCY0R3GJgesY3D65R61rkvsPCyUDVpHSnavjhWSDCpQ2Vu-BW3lZhV1WPd6hmlTyBG01GQtvtkIb4n2sca54o-uJkN7VJ$> .

Best,
Tom

From: fieldtrip <fieldtrip-bounces at science.ru.nl> on behalf of Petar Atanasov via fieldtrip <fieldtrip at science.ru.nl>
Reply to: FieldTrip discussion list <fieldtrip at science.ru.nl>
Date: Tuesday, 1 August 2023 at 09:19
To: "fieldtrip at science.ru.nl" <fieldtrip at science.ru.nl>
Cc: Petar Atanasov <PAtanasov at uclan.ac.uk>
Subject: [FieldTrip] Inquiry regarding "cfg.rotate"

Good evening,
I am currently analysing some co-registered eye-tracking and electroencephalography fixation-related potential (FRP) data.
I am using MATLAB 2022b but I have also replicated the issue with MATLAB 2020b.
For the pre-processing of the data, I have used EEGLAB 2023.0 as well as the EYE-EEG 0.99 and Unfold.

I have been trying to plot topographies and waveforms via the "ft_multiplotER" and the "ft_topoplotER" functions, such that my frontal electrodes are at the top of the image and the occipital electrodes are at the bottom of the image.
However, when I plot the data both with the default as well as with "-90" or "90" degree rotation via "cfg.rotate", my images always show frontal electrodes on the right and occipital electrodes on the left.

When I plot the channel locations with the same coordinates in EEGLAB I get the images with the correct orientation for all electrodes.

Can you please advice on how I may be able to rotate my images correctly and why is it that "cfg.rotate" may not be working as expected?

I am happy to provide further information as needed.
Thank you in advance for your feedback and assistance with my inquiry.
Kind regards,

Petar Atanasov
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End of fieldtrip Digest, Vol 153, Issue 1
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