How to concatenate an array?
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I have an array that is receiving data from the cloud, and I'm loosing the initial data while the array continue receiving the data.
How can I concatenate the data to keep the initial data in the array while continue receiving new data?
Here's the code and the array as a reference.
while true
dataTT = (read(MQTTSignal));
str = dataTT.Data;
str = strrep(str, '{', ''); % remove opening bracket
str = strrep(str, '}', ''); % remove closing bracket
str = split(str,",");
current = str2double(str(:,1));
speed = str2double(str(:,2));
time = str2double(str(:,3));
subplot(2,1,1);
plot(time,current);
ylim([0,150]);
grid ON
title("Current");
subplot(2,1,2);
plot(time,speed);
ylim([0,1000]);
grid ON
title("Speed");
drawnow
pause(3)
end
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1339874/image.png)
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