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	The GDF format is often used in [[brain–computer interface]] research.<ref name=standards-in-bci>{{cite web\|title=Standards in Brain-Computer Interfaces \|url=http://www.bcistandards.org/book/export/html/18 \|accessdate=3 August 2015 }}{{dead link\|date=January 2017 \|bot=InternetArchiveBot \|fix-attempted=yes }}</ref><ref>{{cite book \|editor-first1=Brendan Z. \|editor-last1=Allison\|title=Towards practical brain-computer interfaces bridging the gap from research to real-world applications\|date=2012\|publisher=Springer\|location=Berlin\|isbn=9783642297465\|page=323\|display-editors=etal}}</ref><ref>{{cite book\|last1=Mellinger\|first1=Gerwin Schalk, Jürgen\|title=A practical guide to brain-computer interfacing with BCI2000 general-purpose software for brain-computer interface research, data acquisition, stimulus presentation, and brain monitoring\|date=2010\|publisher=Springer\|location=London\|isbn=9781849960922\|page=91\|edition=Online-Ausg.}}</ref> However, since GDF provides a superset of features from many different file formats, it could be also used for many other domains.		The GDF format is often used in [[brain–computer interface]] research.<ref name=standards-in-bci>{{cite web\|title=Standards in Brain-Computer Interfaces \|url=http://www.bcistandards.org/book/export/html/18 \|accessdate=3 August 2015 }}{{dead link\|date=January 2017 \|bot=InternetArchiveBot \|fix-attempted=yes }}</ref><ref>{{cite book \|editor-first1=Brendan Z. \|editor-last1=Allison\|title=Towards practical brain-computer interfaces bridging the gap from research to real-world applications\|date=2012\|publisher=Springer\|location=Berlin\|isbn=9783642297465\|page=323\|display-editors=etal}}</ref><ref>{{cite book\|last1=Mellinger\|first1=Gerwin Schalk, Jürgen\|title=A practical guide to brain-computer interfacing with BCI2000 general-purpose software for brain-computer interface research, data acquisition, stimulus presentation, and brain monitoring\|date=2010\|publisher=Springer\|location=London\|isbn=9781849960922\|page=91\|edition=Online-Ausg.}}</ref> However, since GDF provides a superset of features from many different file formats, it could be also used for many other domains.

	The free and open source software BioSig library provides implementations for reading and writing of GDF in [[GNU Octave]]/[[MATLAB]] and [[C (programming language)\|C]]/[[C++]].<ref name=biosig>{{cite web\|title=BioSig\|url=~~http~~://biosig.sourceforge.net/\|website=sourceforge.net\|accessdate=3 August 2015}}</ref> A lightweight C++ library called libGDF is also available and implements version 2 of the GDF format.<ref name=libgdf>{{cite web\|title=libGDF download - SourceForge.net\|url=~~http~~://sourceforge.net/projects/libgdf/\|website=sourceforge.net\|date=22 April 2014 \|accessdate=3 August 2015}}</ref>		The free and open source software BioSig library provides implementations for reading and writing of GDF in [[GNU Octave]]/[[MATLAB]] and [[C (programming language)\|C]]/[[C++]].<ref name=biosig>{{cite web\|title=BioSig\|url=https://biosig.sourceforge.net/\|website=sourceforge.net\|accessdate=3 August 2015}}</ref> A lightweight C++ library called libGDF is also available and implements version 2 of the GDF format.<ref name=libgdf>{{cite web\|title=libGDF download - SourceForge.net\|url=https://sourceforge.net/projects/libgdf/\|website=sourceforge.net\|date=22 April 2014 \|accessdate=3 August 2015}}</ref>

	==See also==		==See also==

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The '''General Data Format for Biomedical Signals''' is a scientific and medical data [[file format]]. The aim of GDF is to combine and integrate the best features of all [[biosignal]] file formats into a single file format.<ref name=formats>{{cite web|title=Scientific data formats - Filters for Octave and Matlab|url=http://pub.ist.ac.at/~schloegl/matlab/eeg/|accessdate=3 August 2015}}</ref>

The original GDF specification was introduced in 2005 as a new data format to overcome some of the limitations of the European Data Format for Biosignals (EDF). GDF was also designed to unify a number of file formats which had been designed for very specific applications (for example, in [[Electrocardiography|ECG]] research and [[Electroencephalography|EEG]] analysis).<ref name=v2-spec-arxiv>{{cite arXiv|last1=Schlögl|first1=Alois|title=GDF - A general dataformat for biosignals|eprint=cs/0608052v10|year=2006}}</ref> The original specification included a binary header, and used an event table.<ref name=v1-spec>{{cite web|title=GDF - A General Dataformat for Biosignals|url=http://pub.ist.ac.at/~schloegl/matlab/eeg/gdf4/TR_GDF.pdf|accessdate=3 August 2015}}</ref> An updated specification (GDF v2) was released in 2011 and added fields for additional subject-specific information (gender, age, etc.) and utilized several standard codes for storing physical units and other properties.<ref name=v2-spec-arxiv /> In 2015, the Austrian Standardization Institute made GDF an official Austrian Standard https://shop.austrian-standards.at/action/en/public/details/553360/OENORM_K_2204_2015_11_15, and the revision number has been updated to v3.

The GDF format is often used in [[brain–computer interface]] research.<ref name=standards-in-bci>{{cite web|title=Standards in Brain-Computer Interfaces |url=http://www.bcistandards.org/book/export/html/18 |accessdate=3 August 2015 }}{{dead link|date=January 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{cite book |editor-first1=Brendan Z. |editor-last1=Allison|title=Towards practical brain-computer interfaces bridging the gap from research to real-world applications|date=2012|publisher=Springer|location=Berlin|isbn=9783642297465|page=323|display-editors=etal}}</ref><ref>{{cite book|last1=Mellinger|first1=Gerwin Schalk, Jürgen|title=A practical guide to brain-computer interfacing with BCI2000 general-purpose software for brain-computer interface research, data acquisition, stimulus presentation, and brain monitoring|date=2010|publisher=Springer|location=London|isbn=9781849960922|page=91|edition=Online-Ausg.}}</ref> However, since GDF provides a superset of features from many different file formats, it could be also used for many other domains.

The free and open source software BioSig library provides implementations for reading and writing of GDF in [[GNU Octave]]/[[MATLAB]] and [[C (programming language)|C]]/[[C++]].<ref name=biosig>{{cite web|title=BioSig|url=http://biosig.sourceforge.net/|website=sourceforge.net|accessdate=3 August 2015}}</ref> A lightweight C++ library called libGDF is also available and implements version 2 of the GDF format.<ref name=libgdf>{{cite web|title=libGDF download - SourceForge.net|url=http://sourceforge.net/projects/libgdf/|website=sourceforge.net|date=22 April 2014 |accessdate=3 August 2015}}</ref>

==See also==
* [[List of file formats]]

== External links ==
* [https://arxiv.org/abs/cs.DB/0608052 GDF v2.0 specification]
* [https://shop.austrian-standards.at/action/en/public/details/553360/OENORM_K_2204_2015_11_15 OeNORM K2204:2015]

==References==
{{reflist|2}}

[[Category:Bioinformatics]]
[[Category:Standards for electronic health records]]
[[Category:Computer file formats]]

General Data Format for Biomedical Signals - Revision history

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