Add new row to UITable

Hi i've done some research and was curious if there was a more "effecient" way on how to add new rows with data to a UITable in R2021a using the App-Designer. I got it to work but to me it feels like it would take a lot of afford to keep reading all the existing data and then add the new one to it.

%hTable: handle to the table
%newRow : the row of data you want to add to the table.
oldData = get(hTable,'Data');
newData = [oldData; newRow];
set(hTable,'Data',newData)

Source

This for sure works just fine but im going to display quite a lot of data in there overtime. Right now i can display about 150 rows, which is kinda fine when thinking about it being used as a log, but is still important to view.

I approach to this right now is to append the lines to a file and then clear the UITable from time to time so it wont start lagging. Like i said its all working fine for me but im curious if there is something better to this

Answer 1

[Ishu]

Hi Marcel,

I understand that you are looking for a method to add rows to a "UITable" in App Designer.

You can achieve this by using the "startupFcn" callback.

To add the "startupFcn" callback, follow these steps:

1. Go to "Code View" in App Designer.
2. In the "Editor" tab, click on the "+" sign in "Callbacks" column.
3. From the dropdown in "Callback" select " StartupFcn" from the list. This will add a "startupFcn" callback to your code.

In the "startupFcn", add the following line of code:

% create your matrxi data and add in the UITable using below code.
app.UITable.Data = [matrix data];

This code initializes the "UITable" with "matrix data" when the app starts.