replacing a row of an existing table with nans

if t is a table with a mix of numeric columns and text columns, how can i replace a specific row (let us say row 20 of t) with nan values? I tried

t(20,:)=nan;
t{20,:)=nan;

but both failed.

Answer 1

[Walter Roberson]

NaN cannot be stored in the text columns.

Depending upon your needs, it might help to look at https://www.mathworks.com/help/matlab/matlab_prog/clean-messy-and-missing-data-in-tables.html

Answer 2

[Peter Perkins]

In recent versions of MATLAB, you can do this:

>> t = table([1;2;3],["a";"b";"c"])
t =
  3×2 table
    Var1    Var2
    ____    ____
     1      "a" 
     2      "b" 
     3      "c" 
>> t{2,:} = missing
t =
  3×2 table
    Var1      Var2   
    ____    _________
      1     "a"      
    NaN     <missing>
      3     "c"