How to make the matrix first column name (character), second column content (number)

like this

Answer 1

[KSSV]

For this the best suitable is table

varname = {'H1e' ; 'H2e' ;'H3e';'H4e';'H5e'} ;
val = [12; 0.58; 5; 7;3.98] ;
T = table(varname,val)

T = 5×2 table
    varname    val 
    _______    ____

    {'H1e'}      12
    {'H2e'}    0.58
    {'H3e'}       5
    {'H4e'}       7
    {'H5e'}    3.98

[zl]

thank you very much@KSSV