I have a cell array (see picture). I want to fill those gaps by a number. How can i do this? I will really appreciate your help. Thanks

i tried this code. But it didn't work

    for jj=1:r_txt-1
        if isempty(DO_txt(jj));
            DO_txt2{jj,1}={'0'};
        end
    end

Answer 1

[Walter Roberson]

mask = cellfun(@isempty, D0_txt(1:r_txt-1));
D0_txt2(mask) = {'0'};

[Mohammad Abu Zafer Siddik]

Thanks a lot for your answer. But, DO_txt2 gives one cell with "0". I want the blank cell would be "0". I am really appreciate your help.

[Mohammad Abu Zafer Siddik]

My cell was blank. It doesn't have a cell like "[]". If the cell like "[]" then we can solve this by your code and mine. I don't really understand, what does that blank is? Is it an empty or anything else. I am confused. Thanks

[Walter Roberson]

Works for me, other than it coming out as a row vector by default:

D0_txt = cell(20,1);
D0_txt([3,7,13,19]) = {'10A'};
r_txt = 20;
mask = cellfun(@isempty, D0_txt(1:r_txt-1));
D0_txt2(mask) = {'0'};
>> D0_txt2
D0_txt2 =
  1×18 cell array
    '0'    '0'    []    '0'    '0'    '0'    []    '0'    '0'    '0'    '0'    '0'    []    '0'    '0'    '0'    '0'    '0'

Possibly your cells that look blank are not empty and hold blanks instead.

You might notice that the output includes [] . Those are at the positions where D0_txt was not empty. You did not define what the contents of D0_txt2 should be where D0_txt is not empty.