MATLAB: Sum of matrix elements after using regexp

Question

I wrote the following code to sum all number after locating numeric values from a string by using regexp.

s='2 groupd 40cell f'
g =regexp(s,'\d*','match')
g = cell2mat(g)

It gives an incorrect result: 240 –> instead of [2 40]

Answer 1

The numbers are strings, so cell2mat will concatenate them into one string array.

The solution is to use the str2double function if you want them as separate numbers:

g = str2double(g)
g =
     2    40