MATLAB: How to turn a string into a function and obtain the result

Question

To be more precise I have a sequence of functions that result in several outputs that all look similar to this:

'((5/5)+5)+(5*((5*5)-5))'

I tried using str2func but that didn't seem to work.

Answer 1

Hi Brent,

maybe you can describe a little more what you are trying to achieve? Your "function" has no input, so you could basically evaluate the string:

str = '((5/5)+5)+(5*((5*5)-5))';
value = eval(str);

If you indeed have a function, e.g.

str = '2*exp(x)';

then Per's suggestion of using the "@" and str2func works fine:

fcn = str2func(['@(x) ' str]);

Regards, Titus