If you look at the help of save v7 3 means version 7 0 features plus support for data items greater than or equal to 2gb on 64 bit systems which should be in your advantage.
Mat file version 7 3 or later.
The save variables to version 7 3 mat file example on that page shows the exact syntax.
To load data of any other type complexity or dimension use a timeseries object and save the file using mat file version 7 3 or later.
As i had matlab 2019b i thought i would have the latest and greatest mat file version if i type the following ont he command line.
Starting with mat file version 4 there are several subsequent versions of mat files that support an increasing set of features.
By default all save operations create version 7 mat files.
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.
Matlab releases r2006b and later all support all mat file versions.
Use the matfile function to access matlab variables directly from mat files on disk without loading the full variables into memory.
For data saved using mat file versions prior to 7 3 simulink can only load two dimensional arrays consisting of one dimensional double noncomplex samples.
Save file name v7 3 timeseries.
Matlab releases r2006b and later all support all mat file versions.
Matlab 7 1 r14sp3 1 5 0 september 1 2005 first 64 bit version available for windows xp 64 bit matlab 7 2 r2006a 15 1 5 0 2006 march 1 2006 matlab 7 3 r2006b 16 1 5 0 september 1 2006 hdf5 based mat file support matlab 7 4 r2007a 17 1 5 0 07 2007 march 1 2007.
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.
For variables larger than 2gb use mat file version 7 3 or later.
Starting with mat file version 4 there are several subsequent versions of mat files that support an increasing set of features.