In Ap Designer: put new data into a (ui)table

This should be easy... Data comes in from a serial device consisting of a character and a number (time in msec) and I want to insert it into a table on screen.

I've got my serial callback working (after much effort) and I thought the next step would be easier. I have created a uitable that is displayed on the screen. Empty at first, called ResultsTable and thus referred to as app.ResultsTable with 2 columns named 'Event' and 'Time'. Everything else about the table is defaulted.

The app.ResultsTable.Data is initially [ ] as expected and as each bit of info comes in I want to add it to the table. Serial callback parsed the input into PType (a character) and PTime (uint32) so why does

app.ResultsTable.Data(app.NextTrial,'Event') = char(PType);
app.ResultsTable.Data(app.NextTrial,'Time') = PData;

Give me multiple columns where the number of columns is the ascii value of the character? If PType is 'A' I get 64 zeros and then a 65. I've tried various combinations of [ PType PData ] ( etc.) { another attempt }. All kinds of complicated merging of multiple tables is described in help but not simply putting new data into a new table within App Designer code (which has to be different than MatLab of course)

And after I get that first row in, I sure hope I can keep adding rows (app.NextTrial is the row index of course) for as long as I have enough memory (maybe 1000 rows?), that I can later export to an excel file or .CSV.

Thanks for the help for an old time C coder new to Matlab.

[Gavin]

BTW I have assigned numbers from one table to another with this syntax e.g.

app.TrialsTable(ii, 2) =  app.StimInputTable.Data(jj,3);

And it works just fine.... Even fun things like this work

app.TrialsTable.Var3(ii+xx) = LRCat(1);

While waiting for answers... I tried setting types for the columns with

app.ResultTable = setvartype(app.ResultTable, ...
    {'Event','Time'},{'char','uint32'});

But I got

Undefined function 'setvartype' for input arguments of type 'matlab.ui.control.Table'.

Adding .Data just gives me

Undefined function 'setvartype' for input arguments of type 'cell'.

Answer 1

[Mario Malic]

Hi Gavin,

Hopefully, I understood the question and here's an example code that could help.

hFig = uifigure();
t = uitable("Parent", hFig);
pType = 'a';
pData = 1;

pType = convertCharsToStrings(pType); % uitable supports string arrays, not char arrays
for i = 1 : 5
    if isempty(t.Data) % Init (sets the var types too)
        t.Data = [pType, pData];
    else
        t.Data(end + 1, :) = [pType, pData]; % adding data to the next row
    end
    pData = pData + 1;
end