give matrix element in for loop

hi. i want to make this kind of code in matlab:

a = [ 1 2 3 ];
b1 = 1;
b2 = 3;
b3 = 8;
for i=1:1:3
    a(1,i) = b(i)
end

result ==> a = [1 3 8];

how can i create this kind of code in matlab?

pls pay attention i just want to give b1,b2,b3 to a matrix just with "for" loop.

Answer 1

[Jan]

Welcome to Matlab.

This is the most frequently asked question and a severe mistake of beginners. Do not hide indices in the names of variables. This is a shot in your knee and demands for ugly methods to access the variables later on. See this excellent tutorial:

• Why and how to avoid EVAL
• FAQ: How can I create variables A1, A2, ...

The trivial solution is: Do not create b1, b2, b3, ... but store them in a vector from the beginning.