When you use inputdlg in MATLAB, the input you get is indeed a cell array of strings. If you enter a matrix in the format [1 2 3; 4 5 6], MATLAB treats this as a single string. To convert this string back into a numerical matrix, you need to parse the string correctly.
Here's how you can achieve what you're looking for:
% Prompt the user for input
prompt = {'Enter a matrix:'};
dlgtitle = 'Input';
dims = [1 35];
definput = {'[1 2 3; 4 5 6]'};
answer = inputdlg(prompt, dlgtitle, dims, definput);
% Check if an answer was provided
if ~isempty(answer)
% Convert the answer from cell to string
answerStr = answer{1};
% Safely evaluate the input string to convert it to a numerical matrix
try
% Attempt to evaluate the input string
matrix = eval(answerStr);
% Check if the result is a numeric matrix
if isnumeric(matrix)
disp('The matrix is:');
disp(matrix);
else
error('Input is not a numeric matrix.');
end
catch ME
% Handle cases where the input cannot be evaluated to a matrix
disp(['Error converting input to a matrix: ', ME.message]);
end
end
