how do I change a variable name in each iteration?

I want to create a loop where the variable name changes with each iteration. Specifically, I want to do the following:

r_1 = .4
r_2 = .3
r_3 = .8
r_4 = .2
r_5 = .2
numArrays = 5;
a = cell(numArrays,1);
for n = 1:numArrays
A{n} = .5.*log((1+r_{n})./(1-r_{n}));
end

So in the last line the 'r_{n}' should be the variable 'r_1' for the first iteration, 'r_2' for the second, and so on.

I'm really stuck and I know this is a simple question, but any advice would be much appreciated!

[Stephen23]

Duplicate question:

http://www.mathworks.com/matlabcentral/answers/270069-save-variable-with-changing-name

[Walter Roberson]

@Mikkel Hansen comments to Stephne Cobeldick:

Not the same question nor same responses.

[Walter Roberson]

@Mikkel Hansen

It is the same question. See https://www.mathworks.com/matlabcentral/answers/270069-save-variable-with-changing-name#comment_345592

Answer 1

[Walter Roberson]

Do not do that.

http://uk.mathworks.com/matlabcentral/answers/270069-save-variable-with-changing-name#answer_211257

r_ = {r_1, r_2, r_3, r_4, r_5};

Now your cell array indexing will work.