MATLAB: How to get numbers from char array

arraycharactersdoubleMATLABstringstrings

I have an array of characters that are produced from a fitSVMposterior
'@(S)sigmoid(S,-1.588276e+00,-2.598747e-01)'
I need to access the numbers in this array but don't know how.
Might anyone know how to do so?
Thanks

Best Answer

Assuming your string is named, str,
str = '@(S)sigmoid(S,-1.588276e+00,-2.598747e-01)'; 
numstr = regexp(str,'(-)?\d+(\.\d+)?(e(-|+)\d+)?','match')
% numstr =
%   1×2 cell array
%     {'-1.588276e+00'}    {'-2.598747e-01'}
to convert to double, 
 num = str2double(numstr)
 
%  num =
%       -1.5883     -0.25987
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