Failed to "dot indexing" the data from uitable

Hi, I am trying to build a GUI with some simple user interactions.

Outside of GUI, I can do "Dot indexing" by referring to its "variablenames". For example, for a table T, I can use "T.Size" to obtain data under the variable name "Size". However, the trick does not work when it involves the GUI.

For "app.UITable", the data is stored under "app.UITable.Data". I tried "app.UITable_OSS1.Data.Size" but it returns an error.

"Dot indexing is not supported for variables of this type."

How could I adjust to make it work? Thanks.

Answer 1

[Steven Lord]

The Data property of a uitable can contain different types of data, as stated on this documentation page. If you had stored a table array that contains a variable named Size in that uitable, I would expect that operation to work. But if you'd stored a non-table array in that uitable, it wouldn't.

A = [1 2 3; 4 5 6]

A = 2×3

1 2 3 4 5 6

T = array2table(A, 'VariableNames', ["Size", "Weight", "Temperature"])

T = 2×3 table
    Size    Weight    Temperature
    ____    ______    ___________

     1        2            3     
     4        5            6     

T.Size % Works

ans = 2×1

1 4

A.Size % Does not work

Dot indexing is not supported for variables of this type.

So either create / populate the uitable using a table array or modify your indexing based on whether the Data property istabular.

[Michael Au]

Thank you! After checking with istabular, I realized I'm not dealing with a table.

I also mixed up the VariableNames (code) and the ColumnName (GUI). It's working well now.