How to read UDP data into a vector/array in MATLAB App Designer?

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Tyler Kirsten
Tyler Kirsten 2018-8-17
评论： Tyler Kirsten 2018-8-18
I can't seem to read UDP data into a vector/array in App Designer. I can send a vector/array successfully and receive one in the command window if I try, but not from App Designer. I don't get any errors, it just doesn't work. Here is the code I am currently trying:
function ReadData(app) % read data from UDP values_recieved = fscanf(app.u); app.Recieve_values = str2double(values_recieved);
% update sensor values array
app.Recieve_values_array = [app.Recieve_values_array(2 : end); app.Recieve_values];
% update Speed and Torque gauge with the latest values
app.SpeedRPMGauge.Value = app.Recieve_values(4);
app.EditFieldSpeedLabel.Value = app.Recieve_values(4);
app.TorqueNmGauge.Value = app.Recieve_values(3);
app.EditFieldTorqueLabel.Value = app.Recieve_values(3);
% plot Torque sensor value vs Speed sensor value in GUI
% area(app.UIAxes, app.Recieve_values(4), app.Recieve_values(4), 'LineWidth', 2);
end
  1 个评论
Tyler Kirsten
Tyler Kirsten 2018-8-18
I changed the line: app.Recieve_values = str2double(values_recieved); to: app.Recieve_values = str2num(values_recieved); and it worked for perfectly for a while, then without changing anything it started giving me the same error again "Index exceeds matrix dimensions" and basically freezes the app.
Any ideas?

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