how to convert num to string ?

I have data in one column as follows

x =

[22]

'22 .8 '

[30]

'39 .6 '

[44]

[48]

'49 .6 '

'50 .8 '...

how do I convert to a string?

I have tried using str2double (x) but it displays the results

Nan

22.8000

Nan

39.6000

Nan

Nan

49.6000

50.8000

I am confused when in one data there are 2 different data, namely ('x' and [x])..

I am very grateful to those who have been kind enough to help me

Regards

Jan

Answer 1

[KSSV]

x = { [22]
     '22 .8 '
     [30]
     '39 .6 '
     [44]
     [48]
     '49 .6 '
     '50 .8 '} ;
 
 idx = cellfun(@ischar,x) ;
 y = cellfun(@num2str,x(~idx),'un',0)
 x(~idx) = y ;
 x

[Jan Risn]

this works, thank you for your help

Answer 2

[Andrei Bobrov]

x ={...
     [22]
     '22 .8 '
     [30]
     '39 .6 '
     [44]
     [48]
     '49 .6 '
     '50 .8 '};
 
lo = cellfun(@ischar,x);
out = zeros(size(x));
out(~lo) = cell2mat(x(~lo));
out(lo) = str2double(regexprep(x(lo),'\s',''));

[Jan Risn]

thank you for your help, this really helped me