How to delete a row in a editable table in an app?

Hello, I already programed an "add row" button but I don't know how to program a "delete row " button.I tried to copy the same function and add a - instead of a + but it does not work. I'll attach the captures with the code, including the FCN start up callback. Thank you

Answer 1

[Mario Malic]

Hey,

idx = app.UITable.Selection(1); 
app.UITable.Data(idx, :) = [];

Selection varies whether you have MultiSelect on or off. Check this document if you have MultiSelect on https://www.mathworks.com/help/matlab/ref/matlab.ui.control.table-properties.html#d124e1617327

Below is Walter's comment from the comment section.

%inside callback
fila = app.UITable.Selection;
if isempty(app.UITable.Data) || isempty(fila); return; end   %table is empty or nothing is selected
app.UITable.Data(fila(1),:) = [];  %delete what is selected

[Giulia Di Giorgio]

Hi Mario, it didn't work. I'll show you the error

[Mario Malic]

Make sure that the element is selected in the UITable.

What is the output of fila?

[Giulia Di Giorgio]

I programmed the callback to a button named "delete row". The output should be seen in the table, by deleting the row

[Walter Roberson]

I do not see an error message?

First make sure app.UITable.SelectionType = 'row'; (default is 'cell')

%inside callback
fila = app.UITable.Selection;
if isempty(fila); return; end   %nothing is selected
app.UITable.Data(fila,:) = [];  %delete what is selected

[Giulia Di Giorgio]

Hi walter, thank you, it works but it deletes all thw rows, not the empty ones only. What can I do?

[Giulia Di Giorgio]

Btw, the if you scroll to your right the image I attached, you ar able to read the error :)

[Walter Roberson]

Ah, that error indicates that the uitable is already empty.

%inside callback
fila = app.UITable.Selection;
if isempty(app.UITable.Data) || isempty(fila); return; end   %table is empty or nothing is selected
app.UITable.Data(fila,:) = [];  %delete what is selected

Nothing in the previous discussion indicated that you wanted to delete "empty" rows. The usage of this code is that you would first select one or more rows and then you would click on your button to trigger the deletion o the rows.

[Giulia Di Giorgio]

You're right, I want to delete a row (empty or not), but only one row at click. The code in the last answer you gave me deletes two rows when I click it, empty or not empty, how can I make it delete only one at a time?

[Walter Roberson]

%inside callback
fila = app.UITable.Selection;
if isempty(app.UITable.Data) || isempty(fila); return; end   %table is empty or nothing is selected
app.UITable.Data(fila(1),:) = [];  %delete what is selected

[Giulia Di Giorgio]

Thank you Walter it works perfectly :)!