By default the save function compresses variables a and b before saving them to myfile mat.
Save mat file version 7 3.
To identify or change the default mat file version access the mat files preferences.
In this case the default mat file version is 7 3.
That is why the warnning message sounds strange.
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.
The only exception to this is when you create new mat files using the matfile function.
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.
Use the matfile function to create files in version 7 3 format.
In this case the default mat file version is 7 3.
Create two variables a and b and save them to a mat file version 7 or 7 3.
While saving as version 7 3 works i cannot load or import the new mat file into r2017a.
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.
Save two variables to a mat file.
Partial loading and saving requires version 7 3 mat files any load or save operation that uses a matfile object associated with a version 7 or earlier mat file temporarily loads the entire variable into memory.
I am trying to save a large workspace as a mat for later use.
By default all save operations create version 7 mat files.
The save variables to version 7 3 mat file example on that page shows the exact syntax.
It complaints that you try to save to a mat file older than 7 3.
By default all save operations create version 7 mat files.
Then append a third variable without compression to the same file.
To identify or change the default mat file version access the mat files preferences.
Open the documentation for the save function using doc save.
For example this code.
Your matlab is r2010a which should be later than v7 3.
Learn more about v7 3 save variable 2gb.
