Can I convert empty strings to NaNs automatically in a cell array?

MathWorks Support Team

2009 6 27

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In MATLAB, I have a cell array containing nonempty strings, numbers, and empty strings. I want to change the empty strings to NaNs using a MATLAB function.

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MathWorks Support Team 2009-6-27

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The CELLFUN command provides this functionality:

% Return a boolean array named 'empties' (with same dimensions as cell array
% 'A') with true for each empty element and false otherwise
empties = cellfun('isempty',A);
% Now change all the empty cells in A from empty strings '' to double NaN
A(empties) = {NaN};