Guide NaN problem for user inputs to the uitable

2015 1 19
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I have a table and I use an 'add row' button to append new rows when necessary. I have 6 columns and the first column is ought to be Name. I want the user to be able to edit the first row and write on it. However, when a letter is written it becomes 'NaN'.
The code to add the row is:
data = get(handles.uitable1, 'Data');
data(end+1,:) = [0 0 0 0 0 0];
First zero should be displayed as 'Name' and should be editable.

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