MATLAB: Replacing Matrix Cells with Date Values

date format

Hi,
I am trying to replace the 1 values in a large matrix of cells with the date value stored in a single row. 
Matlab doesn't seem to like dimension mismatch or the form of the date cells, but I need to keep them in date format for future analysis. 
Does anyone have any advice? or Help pages they could direct me to? 
   [1]    [0]    [0]    [0]    [0]    [0]    [0]
    [1]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [1]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [1]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [1]    [0]    [0]    [0]
    [0]    [1]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [1]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [1]    [0]    [0]
    [0]    [0]    [0]    [1]    [0]    [0]    [0]
    [0]    [0]    [0]    [1]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [1]
    [1]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [1]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [0]
    [1]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [0]    [1]
    [0]    [0]    [0]    [0]    [0]    [0]    [0]
    [0]    [0]    [1]    [0]    [0]    [0]    [0]
    [0]    [0]    [1]    [0]    [0]    [0]    [0]
    [0]    [0]    [0]    [0]    [0]    [1]    [0]
    [0]    [0]    [0]    [0]    [1]    [0]    [0]
Columns 1 through 5
    '01/04/2004'    '02/04/2004'    '03/04/2004'    '04/04/2004'    '05/04/2004'
Columns 6 through 7
    '06/04/2004'    '07/04/2004'
I have an equal number of columns in each set, I would just like every one in the matrix to represent the date for corresponding column number.
 Thank you for any help/advice/direction!

Best Answer

d={'01/04/2004'    '02/04/2004'    '03/04/2004'    '04/04/2004'    '05/04/2004'    '06/04/2004'    '07/04/2004'}
v=num2cell(randi([0 1],4,7))
idx=cell2mat(v)==1
for k=1:7
  v(idx(:,k),k)=d(k)
end
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