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Reading and saving of data in the EDF+


Andrey Shapkin


16 Oct 2012 (Updated )

Reading and saving of multichannel biological and physical signals in the European Data Format (EDF)

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The European Data Format (EDF) is a simple and flexible format for exchange and storage of multichannel biological and physical signals.

The code is intended for reading and saving of data in the EDF+.

[data, header] = readEDF(filename)

SaveEDF(filename, data, header)

% filename - EDF+ file name (*.edf)

% data - Contains a signals matrix or cell conteins signals data

% header - Contains header structure



This file inspired Block Edf Load.

Required Products MATLAB
MATLAB release MATLAB 7.9 (R2009b)
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Comments and Ratings (3)
22 Jul 2014 Jakub


I believe there is an error in line 76 of << ReadEDF.m >>.

The file as-downloaded has the following:
Rs=cumsum([1; header.duration*header.samplerate]);

This is incorrect because << header.duration >> does not have to be an integer. The result is that an error occurs when the values of Rs are used to denote vector indices in line 84: Ch_data(Rs(k):Rs(k+1)-1, :)

The correct form of line 76 should be:
Rs=cumsum([1; header.samplerate]);

22 Jul 2014 Helio


Dear Andrey I'm very grateful to have found your routines. I've been dealing with edf+ annotations for a while and your reader works just flawless. Thanks a lot for sharing!

15 Apr 2014 Mark Skopin

Mark Skopin

Please disregard my previous comment. I got it to work. The startime and startdate fields were not all in lowercase. Great functions and very useful! Thanks again!

17 Oct 2012

Screenshot update

14 Jun 2013

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