Creating matrixes in .mat file

I want to create a .mat file and inside the .mat file, there are variables that represent individual matrices. So lets say in the .mat file I have a, b, c, d. And each a, b, c, d has its own matrix and I can add contents into each matrix. Is there a way to do this? thanks

[José-Luis]

You can place as many individual elements in a .mat file as memory permits. Those can be scalars, structures, cell arrays, tables, etc...

Please read the documentation on save to see how to put several variables in a .mat file.

 doc save

Answer 1

[Sandip More]

Yeah Victor. It can be done easily. Please specify matrix a b c and d and then simply create matrix whose elements are a b c d. It works. try it out.

Answer 2

[Victor]

What if i have a function where i want to create new variables inside that .mat file? So in the function i want to create a variable c as a matrix and append it to the .mat file.

[José-Luis]

From the documentation:

 '-append'
Keyword to add data to an existing file. For MAT-files, -append adds
new variables to the file or replaces the saved values of existing
variables with values in the workspace. For ASCII files, -append adds
data to the end of the file.

Please place your post as a comment since it is not really an answer.

[Victor]

Sorry about posting my comment in the wrong area. And well what I want to do is this:

I have a separate script that will create a .mat file, let's call it test.mat. I want to create a function that will add a variable matrix inside the .mat file. The function will have input arguments such as: func(a,b,c,d). So every time I run this function, whatever I put in the input arguments will continuously fill up the variable matrix row by row.

In the separate script, I will ask the user to enter the file name (which can be different anytime) and the file name will be associated to a matrix that will be added to the .mat file.

[Victor]

So every time the user enters a different file name, it will create a new variable matrix in test.mat.