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Help with reading/writing an Android to Matlab G-Force program (Android Sensors)

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Hello, I am currently working on a uni project but I am having a bit of a problem. I am looking for just a x co-ordinate rotational acceleration vs time and angular velocity (on the x axis, not yaw) program. I have created a drone that rotates and I want to receive the data back to matlab. Here's what I have so far. Any tips are great. For some reason the time frames that appear on the graph go to 200 (s) when I pause for 15 s.
connector on yourpassword;
m = mobiledev;
m.AccelerationSensorEnabled = 1;
m.AngularVelocitySensorEnabled = 1;
m.Logging = 1;
pause (10)
m.Logging = 0;
[a, t] = accellog(m);
x = a(:,1);
y = a(:,2);
z = a(:,3);
%plot(t, av);
% Calculate and plot magnitude acceleration
mag = sqrt(sum(x.^2 + y.^2 + z.^2, 2));
plot(t, mag);
xlabel('Time (s)');
ylabel('Acceleration (m/s^2)');
disp (mag)

Accepted Answer

Prashant Arora
Prashant Arora on 27 Apr 2017
Hi Anthony,
This might be happening due to the fact that when using "accelog", MATLAB will give you data from all logs after it established a connection, and not just the last run. To start fresh each time you run a script, you can use the following command:
Hope this helps!

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