create variable at each iteration MATLAB

Question

I would like to achieve something like this:

for(i=1:n)
x[i]=value    %create a new variable for each x: x1,x2,x3
end

any recommendations?

Thank you

Answer 1

You do not need different variables. You can do it with eval but I would not go into it and recommend it.

My answer depends on the dimensions of your value variable. I would say if it is a single number then use the following:

for i=1:n
   x(i)=value;    
end

If value is a string or matrix or different size vectors etc., then use cell array.

for i=1:n
   x{i}=value; %notice curly braces.    
end

Answer 2

You should never do this. Just to be clear, don't use eval to do this this way:

eval(['x' num2str(count) ' = i^2']);

Answer 3

Another alternative is to make each x[i] a field in a structure S . Then you can do something like this

S = struct;
i = 1:n;
tmp = strsplit(num2str(i));

for i = i
    S.(['x',tmp{i}]) = value(i);
end

Then calling S yields

S = 

 x1: 0.6557
 x2: 0.0357
 x3: 0.8491
 x4: 0.9340
 ... 

(In this case I just used random numbers for value .) You cannot make x.1, x.2 and so on because fields that start with a numerical character like '1' are not allowed. If you were content with fields like a, b, c ... then you could generate xa, xb, xc ... in a similar way to above.