EEG data pre-processing script. Everything works fine until i get this: "Error using floatwrite (line 80) Cannot write output file, check permission and space"

53 views (last 30 days)
mimmo voso
mimmo voso on 5 Mar 2019
Answered: xiaofei dong on 24 Sep 2021
I get this error but the rest of the code is working well. It stucks just at the final step, when it is saving the dataset. I'm using EEGlab and these plugins: ERPlab, Biosig, Dipfit, Fileio, Fieldtrip and Firlift.
The full error is:
Error using floatwrite (line 80)
Cannot write output file, check permission and space
Error in floatwrite (line 80)
if fid == -1, error('Cannot write output file, check permission and space'); end;
Error in pop_saveset (line 228)
tmpdata = floatwrite( tmpdata, fullfile(EEG.filepath, EEG.data), 'ieee-le');
I checked the free disk space and it's more than 90 GB so I don't think that's the issue. I also checked if there was any restriction I mistakenly set to the directory I want to save the dataset. I use Mac OS 10.8.5 and MATLAB 2014b. I also tried to set several different directories to check if it was a problem related to a directory the script didn't like for some reason.
  6 Comments
xiaofei dong
xiaofei dong on 24 Sep 2021
I got the same error, but now solved. My problem is the save path did not exist, so I used the follow code to solve it.
if ~exist(strcat(SavePath))%new folder to save preprocess data
mkdir(strcat(SavePath))
end

Sign in to comment.

Answers (2)

Brian Erickson
Brian Erickson on 20 Nov 2020
Long time ago but a note that if you're using
EEG = pop_saveset( EEG, 'filename',[file,'.txt'],'filepath',[path,'myfile.txt'])
or something like it (you have '.set' at the end, be aware that the last argument to pop_saveset is just the PATH not the path + filename. So
EEG = pop_saveset( EEG, 'filename',[file,'.txt'],'filepath',path)
will work. It's just a super dumb unhelpful error message, but the problem is that pop_saveset is trying to write to a path that doesn't exist because the filename is incorrectly appended to it.

xiaofei dong
xiaofei dong on 24 Sep 2021
I got the same error, but now solved. My problem is the save path did not exist, so I used the follow code to solve it.
if ~exist(strcat(SavePath))%new folder to save preprocess data
mkdir(strcat(SavePath))
end

Products


Release

R2014b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!