Matlab Mat File 7 3

The save variables to version 7 3 mat file example on that page shows the exact syntax.

Matlab mat file 7 3. To identify or change the default mat file version access the mat files preferences. Load matlab 7 3 mat files into python. If filename has no extension that is no period followed by text and the value of format is not specified then matlab appends mat if filename does not include a full path matlab saves to the current folder. In this case the default mat file version is 7 3.

Matlab 7 5 r2007b 18 1 6 0 september 1 2007. This means they cannot be loaded by scipy io loadmat any longer and raise. If the file does not exist matfile creates a version 7 3 mat file on the first assignment to a variable. Beginning at release 7 3 of matlab mat files are actually saved using the hdf5 format by default except if you use the vx flag at save time see help save in matlab.

By default all save operations create version 7 mat files. Please use hdf reader for matlab v7. In order to save your data to a mat file with version 7 3 or later specify the v7 3 flag as the version input argument. When you create a new file using matfile the function creates a version 7 3 mat file that also lets you save variables larger than 2 gb.

These files can be read in python using for instance the pytables or h5py package. Starting with matlab 7 3 mat files have been changed to store as custom hdf5 files. This library loads matlab 7 3 hdf5 files into a python dictionary. As a side note i find it highly ironic that the proprietary v6 v7 mat format is more cross platform compatible due to its documentation compared to the v7 3 format that is supposed to rely on the standard hdf5 format and yet is sufficiently different in a non documented manner to make this format unusable on any platform outside matlab.

Name of file specified as a character vector or string scalar. Otherwise matfile searches for the file along the matlab search path. If filename does not include an extension matfile appends mat. The only exception to this is when you create new mat files using the matfile function.

If you do not specify filename the save function saves to a file named matlab mat. Use the matfile function to access matlab variables directly from mat files on disk without loading the full variables into memory.