how to put a cell array in the top row of cell matrix with out erasing data in matlab

To insert a cell array as the top row of a cell matrix in MATLAB without erasing the existing data, we can make use of the vertcat function along with the curly braces to concatenate the two cell arrays.

Here's the solution:

main.m
% existing cell matrix
existingData = {'A', 'B', 'C'; 1, 2, 3; 4, 5, 6};

% cell array to be inserted as top row
newRow = {'X', 'Y', 'Z'};

% concatenate the two cell arrays
newData = [newRow; existingData];

% display the result
disp(newData);
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In the above code, we define the existing cell matrix as existingData and the cell array to be inserted as the top row as newRow. We then use the vertcat function along with the semicolon to concatenate the two cell arrays. This results in a new cell matrix newData which has the cell array newRow as the top row and the existing data below it.

Note that to access the elements in the resulting cell matrix, we will need to use curly braces {} instead of round brackets () due to the nature of cell arrays.