I'm trying to create Matrices Index or subscript ?

Hello guys

I wish you help me with my issue. I am trying to put a subscript or index to a group of matrices. I tried the following short code which did not work. The code is showed below.

>> x=[1 2 3;4 5 6;7 8 9]

x =

     1     2     3
     4     5     6
     7     8     9

>> u=1;
>> for i=1:3
y_u=i*x;
u=u+1;
end
>> y_1
??? Undefined function or variable 'y_1'.

Thank you in advance

Answer 1

[Matt Fig]

Do not program that way in MATLAB!

You want this:

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

for ii = 1:3
  y{ii} = ii*x;  % Notice {} and not ()
end

Now you have a cell array that has as each element a matrix:

y{1}
y{2}
y{3}

If you want to make ii go much further than 3, you should pre-allocate the memory for y first...

[Andrei Bobrov]

x = [1 2 3;4 5 6;7 8 9];
y = bsxfun(@times,x,reshape(1:3,1,1,[]));
yout = num2cell(y,[1 2]);

[Abdulaziz]

Thank you Matt FIG this was really helpful

I appreciate your time