Option 1: Create a table with row names and load the table into a uitable.
T = array2table(rand(3,2),'VariableNames',{'A','B'},'RowNames',{'i','ii','iii'});
uif = uifigure();
uitable(uif, 'Data', T)
Option 2: Create the uitable directly
uif = uifigure();
T = uitable(uif, 'Data',rand(3,2),'ColumnName',{'A','B'},'RowName',{'i','ii','iii'});
To update an existing app
app.UITable.Data = rand(3,2); % update data
app.UITable.ColumnName = {'A','B'};
app.UITable.RowName = {'i','ii','iii'};
