why I can't save everything into a Matlab Script file?

%First set of polynomials
p1 = [15 9 -22];   
p2 = [8 -17 -12];   

P = p1 + p2;
disp('The sum of the polynomial is')

The sum of the polynomial is

disp(P)

    23    -8   -34

%Second Set of Polynomials

x1 = [7 0 -3];      
x2 = [-15 -13 18];  

X = x1 + x2;
disp('The sum of the polynomial is')

The sum of the polynomial is

disp(X)

    -8   -13    15

%Expanding first expression

syms x y

B = (3*x + 4*y)^3;
A = expand (B);
disp('Expanded form of (3x + 4y)^3:');

Expanded form of (3x + 4y)^3:

disp(A);

%Expanding second expression

syms m n 

B = (5*m^2 + 4*n^2)^5;
A = expand (B);
disp('Expanded form of (5*m^2 + 4*n^2)^5');

Expanded form of (5*m^2 + 4*n^2)^5

disp(A);	

%factoring first polynomial

syms a;

A = (a^3 + 5*a^2 - 2*a-24);
B = factor (A);
disp('Factor form of (a^3 + 5*a^2 - 2*a-24) ');

Factor form of (a^3 + 5*a^2 - 2*a-24) 

disp(B);

%factoring second polynomial

syms x

A = 4*x^3 + 3*x^2 - 25*x + 6;

B = factor(A);

disp('Factored form of 4x^3 + 3x^2 - 25x + 6:');

Factored form of 4x^3 + 3x^2 - 25x + 6:

disp(B);

%factoring third polynomial

syms x 

A = x^4 - 10*x^2 + 9;
B = factor (A);
disp('Factored form of x^4 - 10*x^2 + 9:');

Factored form of x^4 - 10*x^2 + 9:

disp(B);

CAN'T SAVE AS MATLAB SCRIPT FILE

[DGM]

What exactly are you trying to do to save variables as a .m file?

Answer 1

[Pavan Sahith]

Hello Aj,

I noticed that you're encountering the warning: "The variables that could not be saved into MATLAB Script are saved into MAT file" while trying to save your workspace variables to a MATLAB script file.

This warning appears because some of the variables in your workspace cannot be represented as MATLAB code within a script file. To understand this better, you need to know differences between a MAT file and a MATLAB script file.

Script files are meant to be executed. When you load a script file, MATLAB runs the commands in the file to recreate the variables.

• Certain types of variables such as MATLAB objects, function handles, and anonymous functions cannot be saved into a script file and are instead stored in a MAT-file.
• MATLAB provides the 'matlab.io.saveVariablesToScript' function to save workspace variables to a script file. However, it has limitations on what can be saved to a script.

MAT files are optimized for storing and retrieving data. They handle large datasets and complex structures efficiently, which a text-based script cannot. Loading a MAT file is typically faster and more reliable than executing a script to recreate the same variables.

If you use the MATLAB Editor's "Save Workspace As" feature and select "MATLAB Script," MATLAB will attempt to generate a script file that recreates these variables. However, if some variables cannot be converted to code, MATLAB will:

1. Generate a Script File: For variables that can be represented as MATLAB code, MATLAB will create a script file (e.g., workspace_script.m).
2. Save to a MAT File: For variables that cannot be converted to code, MATLAB will save them into a MAT file (e.g., workspace_script.mat) and issue a warning.

you can refer to the following MathWorks Documentation to understand more

• https://www.mathworks.com/help/matlab/ref/matlab.io.savevariablestoscript.html
• https://www.mathworks.com/help/matlab/workspace.html
• https://www.mathworks.com/help/matlab/ref/save.html

Hope the above information helps you