How to save mat file using save() with a different variable name using for loop

a=[1,2,3,4,5,6,7,8,9];

b=[m,n,o,p,q,r,s,t,u];

for i=1:9

save('2_back_gp_1_trial_ str2num(a(i))_sub_1.mat',' b(i)')

end

Answer 1

[Stephen23]

"How to save mat file using save() with a different variable name using for loop"

That rather poor data design that seems to be tempting the use of dynamic variable names:

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

It could be done by dynamically naming a structure field and then using the -struct option, e.g.:

V = 1:9;
C = 'm':'u';
for k = 1:numel(V)
    b = V(k);
    S = struct(C(k),b);
    F = fprintf('file_%d.mat',b);
    save(F,'-struct','S')
end

However your code would be simpler and more efficient if you simply used exactly the same variable name in every file, e.g.:

V = 1:9;
for k = 1:numel(V)
    b = V(k);
    F = fprintf('file_%d.mat',b);
    save(F,'b')
end