How to enter the path of the folder that has the raw data to be analyzed

Hello I am new to MATLAB and am sure this is a simple question. I am trying to use the MADE pipeline code to analyse some EEG data and keep getting the same error code:

Index exceeds the number of array elements (0).

Error in MADE_pipeline_v1_0 (line 131)

[filepath,name,ext] = fileparts(char(datafile_names{1}));

This is for the section of code that looks like this:

%% Read files to analyses

datafile_names=dir(rawdata_location);

datafile_names=datafile_names(~ismember({datafile_names.name},{'.'}));

datafile_names={datafile_names.name};

[filepath,name,ext] = fileparts(char(datafile_names{1}));

My tutor suggested it was because the rawdata_location had been coded wrong. This is the code I have wrriten for that section:

clear % clear matlab workspace

clc % clear matlab command window

addpath(genpath(('Users/ elinorbaldwin/ Desktop/ eeglab2021.1')))

eeglab

rawdata_location ='C:Users\ elinorbaldwin\ Desktop\ eeglab2021.1\ Data';

output_location ='C:\ Users\ elinorbaldwin\ Desktop\ Output';

channel_locations ='C:\ Users\ elinorbaldwin\ Desktop\ eeglab2021.1\ plugins\ MADE-EEG-preprocessing-pipeline-master\ channel location files';

Does anyone have any ideas why I keep getting this error code?

Answer 1

[Voss]

The problem is that dir() returns an empty struct array because the directory you gave it doesn't exist.

You can fix this by giving dir() directories that do, in fact, exist, by making sure your directories are written correctly.

For instance,

rawdata_location ='C:Users\ elinorbaldwin\ Desktop\ eeglab2021.1\ Data';

should be:

rawdata_location ='C:\Users\elinorbaldwin\Desktop\eeglab2021.1\Data';

(backslash after C: and no spaces before each folder).

etc. for the others.

This is assuming you're on Windows, but the line:

addpath(genpath(('Users/ elinorbaldwin/ Desktop/ eeglab2021.1'))) 

is not Windows-style directory syntax. So it may be that they all should be Linux/Unix-style separators. Regardless, all of those directories need to be accurate for your code to work.