Use a string as a struct name

In different files, I have a struct. Each struct has the same underlying structure and variable names. But the name of each struct is different, yet predicable by the filename

I want to programatically load the files (no problem), create a string from information in the filename (no problem), and then use this string as the structname. For example (getting data in the matrix 'age'):

filename = 'output_setting1.mat'

structname = 'setting1'

data = setting1.age

How can I convert structname = 'setting1' so I can use it as shown in the last line?

Answer 1

[Walter Roberson]

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

filename = 'output_setting1.mat';
file_struct = load(filename);
fn = fieldnames(file_struct);
data_struct = file_struct.(fn{1});
data = data_struct.age;

No need to dynamically create the name of a variable: you can create the name of a field instead.