Starting with mat file version 4 there are several subsequent versions of mat files that support an increasing set of features.
Mat file version 7 3 or later.
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.
Save file name v7 3 timeseries.
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.
Starting with mat file version 4 there are several subsequent versions of mat files that support an increasing set of features.
March 7 2005 support for memory mapped files.
Your matlab is r2010a which should be later than v7 3.
Matlab releases r2006b and later all support all mat file versions.
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.
The save variables to version 7 3 mat file example on that page shows the exact syntax.
Use the matfile function to access matlab variables directly from mat files on disk without loading the full variables into memory.
Matlab releases r2006b and later all support all mat file versions.
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.
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.
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.