X64 EEG Channel Location

[Adam Avalos]

Hello, I am using a X64 channel EEG cap from OTB and have been unable to locate a file to use the channel locations in cartool. Does anyone have any advice on a work around for this matter?

[abagda...@gmail.com]

You can easily create a channel locations file in Notepad. Each row should contain x, y, and z coordinates, and a channel label. Each value should be separated by a space (no commas) and the first row should just be the total number of channels (see below for example). Once you save the file as a .txt, you can then simply change the file extension to .xyz and Cartool should be able to read it.

129
6.30200 -6.60700 -2.94200 E1
7.65900 -6.04100 0.35100 E2
8.71500 -4.41100 3.50200 E3

...

...

...

0.00000 0.00000 10.15900 E129

[Alessia Pesenti]

Hi, i've tried this way but Cartool cannot open my file.  What am I doing wrong? 

Thanks!

[Armen Bagdasarov]

I copied the values from your screenshot and it worked for me, so I am not sure what you are doing wrong without more information.

Did you save as a regular .txt file and then change the extension to .xyz? When you change to a .xyz extension, the image of the notepad icon should change to a cartool channel locations icon. For more information, please see our tutorial: https://github.com/gaffreylab/EEG-Microstate-Analysis-Tutorial/wiki/Tutorial#channel-locations

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[Alessia Pesenti]

Hi. actually the problem is that on the PC I have worked with even if i rename the file with the .xyz extension, its extension remain .txt. I've tried with another PC and it works. Thank you! 

Alessia

Il giorno giovedì 21 settembre 2023 alle 05:58:48 UTC+2 Armen Bagdasarov ha scritto:

I copied the values from your screenshot and it worked for me, so I am not sure what you are doing wrong without more information.

Did you save as a regular .txt file and then change the extension to .xyz? When you change to a .xyz extension, the image of the notepad icon should change to a cartool channel locations icon. For more information, please see our tutorial: https://github.com/gaffreylab/EEG-Microstate-Analysis-Tutorial/wiki/Tutorial#channel-locations

On Wed, Sep 20, 2023 at 10:55 AM Alessia Pesenti <alessia...@lanostrafamiglia.it> wrote:

Hi, i've tried this way but Cartool cannot open my file.  What am I doing wrong? 

Thanks!

Il giorno lunedì 22 maggio 2023 alle 03:04:34 UTC+2 abagda...@gmail.com ha scritto:

You can easily create a channel locations file in Notepad. Each row should contain x, y, and z coordinates, and a channel label. Each value should be separated by a space (no commas) and the first row should just be the total number of channels (see below for example). Once you save the file as a .txt, you can then simply change the file extension to .xyz and Cartool should be able to read it.

129
6.30200 -6.60700 -2.94200 E1
7.65900 -6.04100 0.35100 E2
8.71500 -4.41100 3.50200 E3

...

...

...

0.00000 0.00000 10.15900 E129

On Friday, May 19, 2023 at 12:25:00 PM UTC-4 Adam Avalos wrote:

Hello, I am using a X64 channel EEG cap from OTB and have been unable to locate a file to use the channel locations in cartool. Does anyone have any advice on a work around for this matter?