Assigning data to variable names in a vector during a for loop.

Hi

I wanna make a vector with variable names and then assign values to the from a for loop.

Estimates = [1 2 3 4 5 6 7];

variables = (a b c d e f g};

for i = 1:length(variables)
    variables(i) = Estimates(1);
end

So that

a = 1 b = 2 etc

and so on. Is this possible?

And also is i possible to make it so that you create variables named in incremental way? I.e

b = [2 5 45];
for i = 1:length(b)
'a'+int2str(i) = b(i);
end

that is

a1 = 2 a2 = 5 and a3 = 45

Kind Regards

[Stephen23]

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

Answer 1

[Jonas Reber]

yes this is possible. you could use the command "eval" that comes with matlab. have a look at the documentation.

for your case you would have to change the variables array to have chars inside - i.e.:

vars = {'a', 'b', 'c'}

and in the for loop use

vals = [1 2 3 4]
vars = {'a', 'b', 'c', 'd'}

for i = vals
    eval([vars{i} '=  vals(i)'])
end

also, you might want to have a look at the "genvarname" command of matlab that does exactly what you want in the second part of your question.

[Mamed]

Thanks a lot. Just a smal question is there a way to stop it from showing the values that are being assigned? the ; doesn't work.

Kind regards

[Daniel Shub]

Just add a semicolon inside the eval

eval([vars{i} '= vals(i);'])

Answer 2

[Daniel Shub]

While you can do this with eval, it is generally not recommended. This is pretty well covered in the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F