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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.〔(【引用サイトリンク】url=http://pub.ist.ac.at/~schloegl/matlab/eeg/ )〕 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 ECG research and EEG analysis). The original specification included a binary header, and used an event table.〔(【引用サイトリンク】url=http://pub.ist.ac.at/~schloegl/matlab/eeg/gdf4/TR_GDF.pdf )〕 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.〔 The GDF format is often used in brain–computer interface research.〔(【引用サイトリンク】url=http://www.bcistandards.org/book/export/html/18 )〕 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/C++.〔(【引用サイトリンク】url=http://biosig.sourceforge.net/ )〕 A lightweight C++ library called libGDF is also available and implements version 2 of the GDF format.〔(【引用サイトリンク】url=http://sourceforge.net/projects/libgdf/ )〕 The binary nature of the meta-information might not be suitable for all applications. The Extensible Data Format (XDF) is currently being developed with the aim of providing a flexible and extensible format for all kinds of data streams, but in particular for biosignals.〔(【引用サイトリンク】url=https://code.google.com/p/xdf/ )〕 As of 2015, XDF is in beta release.〔(【引用サイトリンク】url=https://code.google.com/p/xdf/wiki/Specifications )〕 ==See Also== * List of file formats 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「General Data Format for Biomedical Signals」の詳細全文を読む スポンサード リンク
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