Matlab app designer error related to an array
2 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Luis Ricardo Rivera Goitia
il 5 Mag 2023
Modificato: Adam Danz
il 8 Mag 2023
I'm developing a GUI to show DC-motor current and speed signals, now I'm experiencing some code difficulties.
When running the code there's an error msg related to a point used in an array which actually runs perfectly in matlab .m code.
Does anyone know how to get rid of this error?
properties (Access = private)
current % Current in mA
speed % Speed in rad/s
time % Time in s
current_temp = [];
speed_temp = [];
time_temp = [];
Data
end
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1375814/image.jpeg)
0 Commenti
Risposta accettata
Adam Danz
il 5 Mag 2023
The table appears to be empty (running from m-file)
MQTTSignal = mqttclient('tcp://broker.hivemq.com','Port',1883)
dataTT = read(MQTTSignal)
dataTT.Data
6 Commenti
Adam Danz
il 6 Mag 2023
Modificato: Adam Danz
il 8 Mag 2023
Thanks for sharing the video!
> Any other suggestion to improve the plotting view?
Yes, the plotting can be more efficient. Instead of creating a new line object every iteration, you can update an existing line object.
% Create line objects
hCurrent = plot(app.UIAxes,nan,nan);
hSpeed = plot(app.UIAxes,nan,nan);
% update line objects within the loop
while strcmpi(...)
...
app.current = [app.current;app.current_temp];
app.speed = [app.speed;app.speed_temp];
app.time = [app.time;app.time_temp];
set(hCurrent,'XData',app.time,'YData',app.current)
set(hSpeed,'XData',app.time,'YData',app.speed)
end
Più risposte (0)
Vedere anche
Categorie
Scopri di più su Construct and Work with Object Arrays in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!