uitable - rows reset question

Hi, I have a uitable that gets populated during some image analysis routine. At the end, if i want to set off another image analysis, I need to clear the Uitable. I originally require one blank row with no strings inside. Whilst I can remove the rows using:

%******Count number of rows********************
 X=get(handles.uitable1,'Data')
 [r c ~]=size(X)
 %*********Delete until 1 row*****************
 while r > 2
    [r c]=size(X)
     X(r,:)=[]
  end
  set(handles.uitable1, 'Data', X);
  drawnow;

Row one still contains data and I want to keep the row but with empty cells. I have tried

X = repmat(' ',1,c)

But this doesnt work.

[Jason]

OK, I think I need to do:

newRowdata = cell(1,size(X,2));