ismatlab function within pop_loadbv not working

I am trying to load some EEG data into matlab using this code:

ampmatrix = nan(totalN, length(triggerlabels));

SNRdb_matrix = nan(totalN, length(triggerlabels));

for PNo = 1:totalN % loop to iterate through each EEG data file

[EEG, com] = pop_loadbv('C:\Users\Georg\OneDrive - University of XXX\EEG_data', files(PNo).name);

(with my actual onedrive not XXX)

and I am getting this error message:

Unrecognized function or variable 'ismatlab'.

Error in pop_loadbv (line 146)

if ismatlab

^^^^^^^^

I am really stuck! I have tried downloading and setting a path to the bva-io package but it is not working. My EEG folder contains three files for each participants (.eeg, .vhdr and .vmrk) and also has a path set to it. Can anyone help me please?

Answer 1

[Anay]

Hi Georgina,

From what I understand, you're using the "pop_loadbv" function from the "bva-io" package, which is causing the error: "Unrecognized function or variable 'ismatlab'".

This error occurs because MATLAB cannot locate anything named "ismatlab" (either a variable or a function) on its path.

A probable reason for this issue is that you haven't installed the "EEGLAB" toolbox, which is necessary for using the "bva-io" package.

You can follow the steps provided in the linked answer below to resolve this error:

https://www.mathworks.com/matlabcentral/answers/96005-why-do-i-get-the-error-unrecognized-function-or-variable

I hope this helps.