share the data that you wan to convert let me try

Dear Chigbogu,

Try this:

a = '1+2+3+4';

a = strrep(a,'+',' ');

b = str2num(a)';

% b is numeric and a row vector of the size (4,1)

isnumeric(b)

[sz1, sz2] = size(b)

This is perhaps the wrong forum for questions of this type. Matlab central would be more appropriate, see link below

Best regards,

Peter

https://de.mathworks.com/matlabcentral/

Thanks, Peter Lasch. I traditionally used "coeffs" command for similar problems but I was looking for a faster approach and your suggestion solves my problem. One again, thanks for recommending the appropriate forum.