calling matrices for a for loop

x1 =[

8 9

15 39

23 14

13 17

38 42]

x2 =[

8 9

15 39

23 14

18 2

38 42]

x3 =[

8 9

15 39

23 14

13 17

14 39]

x4 =[

8 9

15 39

23 14

18 2

13 17

38 42]

i have 4 matrices i want to call each matrix to get divided by 2

which is something like this

for i=1: 4

y(i)= x(i)/2

end

but this for loop is is not working beacuse location of x1,x2,x3,x4 is not fixed.

[Stephen23]

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

Use indexing.

Indexing is neat, simple to debug, and very effiicient (unlike what you are trying to do).

Answer 1

[David Hill]

Why not make a cell array?

x{1}= A([1,2,3,5,8],:);
x{2}= A([1,2,3,4,8],:);
x{3}=A([1,2,3,5,7],:);
x{4}=A([1,2,3,4,5,8],:);
for i=1:4
    y{i}=x{i}/2;
end