How to automatically generate rows in uitable from edit box?

Hi, hope this community can help me to solve this problem. I've created an UI with one edit box and a table ( rows by 3). Whenever i insert a value into the edit box , i want the row of the table is equal to the number I've inserted.

• Let say i put 5 in the edit box
• The table will automatically generate 5 rows
• Column 1 of the table will automatically fill with 1:5

Hope you guys can help me to figure how to make it.

Answer 1

[Geoff Hayes]

Nik - if we assume that your edit box is named edit1 and your table is named uitable1, then in your edit box callback, you could do something like

 function edit1_Callback(hObject, eventdata, handles)

 numRows = str2num(char(get(hObject,'String')));

 if ~isempty(numRows) && numRows>0
     numRows = ceil(numRows);
     data    = zeros(5,3);
     data(:,1) = (1:5)';

     % convert the values matrix to a cell array
     valuesAsCell = mat2cell(data);

     % update the table
     set(handles.uitable1,'Data',valuesAsCell{:});
 end

In the above, we get the string input from the edit box and convert it to a number. If it is numeric (non-empty) and positive, we create the data matrix and populate the first column with the numbers from 1 to 5 with the remaining entries set to zero. We then convert it to a cell matrix and set the table.

EDIT

Wrapped the get(hObject,'String') in char to convert the return type from the get from a cell array to a char/string array.

[Nik]

I've try run your codes sir but the program always say an error.

it shows error as below:

Error: File: test_gui1.m Line: 125 Column: 1
Function definition is misplaced or improperly nested.

And the Line:125 only contains

function input1_CreateFcn(hObject, eventdata, handles)

Do i need to edit anything in the input1_CreateFcn line?? Notes: input1 is my edit box tag

[Geoff Hayes]

I made a slight change to the above code which was causing a Requires string or character array input error because the get(hObject,'String') was returning a cell array. So the first line is now

 numRows = str2num(char(get(hObject,'String')));

As for your error, without seeing your code, I don't know why there would be a problem unless you have forgotten to add an end statement to some code of the function that precedes your input1_CreateFcn.

No code is required for the input_CreateFcn so you can leave it as blank.

[Diogo Queirós]

I'm having a problem that i can't solve. I want to insert text in the first collumn, but as soon as i insert any caracter that is not a number, the cell automatically goes to NaN. Can you help me?

edit1 = str2num(char(get(hObject,'String')));
 if ~isempty(edit1) && edit1>0
     edit1 = ceil(edit1);
     data = cell(edit1,4);
     % convert the values matrix to a cell array
     valuesAsCell = mat2cell(data);
     % update the table
     set(handles.uitable,'Data',valuesAsCell{:});
 end