How to build a vector with dynamic variables?

Question

Guillaume Senger 2018-11-19

编辑： Matt J 2018-11-19

I have variables :

q1 = 10;
q2 = 20;
q3 = 3;
q4 = 4;
q5 = 55;
...
qN = x; 

and I want to put them in a vector Q that i created like :

Q = zeros(N,1);

How can I insert each variable in the vector at the correspondig place with a loop. Something like that :

for i = 1:N
    Q(i)= % here qi
end

Answer 1

Matt J 2018-11-19

编辑：Matt J 2018-11-19

I hope you're doing this because you have now realized that it was a bad idea to create q1...qN to begin with and are seeking to undo the damage.

>> Q=arrayfun(@(i) evalin('caller',['q' num2str(i) ';']) , 1:5)
Q =
    10    20     3     4    55

Guillaume Senger 2018-11-19

Thank you very much, it works perfectly!