MATLAB: Do the EditField / TextArea not get updated

Question

Hello everyone,

I am currently writing an app with AppDesigner to plot some variables.

I have a ListBox containing the variable names I have listed in a table. In that table I also have the path information of the variable.

I am trying to display that path information in a TextArea or in an EditField, however they stay empty.

I've tried to solve this with these lines in the ListBox-function

function VariablesListBoxValueChanged(app, event)
    app.VariablesListBox.ItemsData = 1:length(app.VariablesListBox.Items);
    SelectNum = app.VariablesListBox.Value;
    load s; % s is the table which I already loaded with another button
    SelectPath = s.Y(SelectNum).Path;
    set(app.VariableTextLabel, 'Text', SelectPath);
    app.VariablePathTextArea.Value = SelectPath
    save SelectNum;
    save SelectPath;
end

and with these ones in the PushButton-function

function ShowButtonPushed(app, event)
    load s;
    load SelectNum;
    load SelectPath;
    set(app.VariableTextLabel, 'Text', SelectPath);
end

but nothing seemes to be working.

I am very helpful for every piece of advice. Many thanks in advance!

Answer 1

The save command saves your workspace into file called SelectNum, maybe without file format, I can't verify this now.

You can have SelectPath as a property of the application, declare it at the beginning and change the line in the first callback to

app.SelectPath = s.Y(SelectNum).Path;

In the second callback, this should do it.

function ShowButtonPushed(app, event)
    app.VariablePathTextArea.Value = app.SelectPath % This updates the text area (white space)
    % app.VariableTextLabel.Text = SelectPath % This updates label (description)
end