Matfile
From Just Solve the File Format Problem
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| − | {{FormatInfo
| + | #REDIRECT [[MAT]] |
| − | |formattype=electronic
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| − | |thiscat=Scientific Data formats
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| − | |extensions={{ext|mat}}
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| − | |mimetypes={{mimetype|application/x-matlab-data}}
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| − | }}
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| − | '''MAT-File''' is a format used by Mathworks' [[Matlab]] for storing formatted data (matrices, structs, scalars and strings).
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| − | Apart from Matlab, the format is also supported by Mathematica. [https://www.gnu.org/software/octave/ GNU Octave], an open source alternative to Matlab, should be able to read and write the format as well. Scientific computing packages [http://numpy.scipy.org/ NumPy and SciPy] enable support for MAT-files in [[Python]].
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| − | == Versions ==
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| − | The [http://www.mathworks.com/help/pdf_doc/matlab/matfile_format.pdf published specification] makes a distinction between Level 4 and Level 5 MAT-files, where Level 4 files are compatible with older MATLAB versions (up to version 4), whereas level 5 files are compatible with MATLAB versions 5 and higher. The overall layout of a Level 4 file is quite different from Level 5, and the two might even be considered separate formats. For example, Level 4 files don't have a unique 'magic' byte pattern that would allow easy identification, whereas the header of a Level 5 file includes a descriptive text field that could be used for this.
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| − | [[Matlab_figure]] files are really just a special case of the level 5 MAT-File format.
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| − | == Identification ==
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| − | Level 5 files begin with the text string <code>MATLAB 5.0 MAT-file</code>. No such unique pattern exists for level 4. The MIME type of this format is unofficial, and it is used by [[Apache Tika]]
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| − | == Specification ==
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| − | * [http://www.mathworks.com/help/pdf_doc/matlab/matfile_format.pdf MAT-File Format Specification]
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| − | == Software ==
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| − | * [http://www.mathworks.com/matlabcentral/fileexchange/6893-matcat-mat-file-corruption-analysis-tool MATCAT - MAT-File Corruption Analysis Tool] (requires MATLAB)
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| − | == Links ==
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| − | * [http://stackoverflow.com/questions/3947549/what-is-the-difference-between-m-and-mat-files-in-matlab What is the difference between .m and .mat files in MATLAB]
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| − | * [http://www.mathworks.com/help/matlab/import_export/mat-file-versions.html MAT file versions]
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| − | * [http://en.wikibooks.org/wiki/Octave_Programming_Tutorial/Saving_and_loading_a_MAT-file Saving and loading a MAT-file in GNU Octave]
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| − | * Writing Custom Applications to Read and Write MAT-Files [http://www.mathworks.se/help/matlab/matlab_external/custom-applications-to-read-and-write-mat-files.html here]
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Latest revision as of 12:05, 27 October 2014
- REDIRECT MAT
