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Making heading data continuous (i.e. instead of 359 --> 0 degrees make it 359 --> 360 degrees)

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Amritz Ansara
Amritz Ansara on 11 May 2021
Commented: Amritz Ansara on 12 May 2021
I have a spreadsheet containing data about a vehicle's speed and heading against time. The spreadsheet is attached. When plotting the heading of the vehicle against time, I get this plot:
As can be seen, the near-vertical lines are mostly because the vehicle's heading changes from 359 degrees to 0 degrees (and vice versa) which makes the bearing look discontinuous. How could I make it such that the vehicle heading data reads, say, 360 degrees, 361 degrees, etc? I need it as it's easier for me to then calculate through what angle a vehicle has turned.
Please let me know if you need any clarification.
To get the plot above, my code is:
A = readmatrix("20181026075227_947BE7249B00.csv");
%find initial time, since time is in UNIX millisecond format.
%column 1 is the time, column 6 is the bearing
t0 = A(1,1);
plot((A(:, 1)-t0)/1000, A(:, 6), 'LineWidth', 3)
ylabel("Heading (degrees)")
xlabel("Time from start (s)")

Accepted Answer

More Answers (1)

Geoff Hayes
Geoff Hayes on 12 May 2021
Amritz - perhaps a polarplot might be useful:
polarplot(headingData*pi/180.0, (A(:, 1)-t0)/1000);
  1 Comment
Amritz Ansara
Amritz Ansara on 12 May 2021
While this wasn't in my mind originally, no doubt I'll find this useful in the future. It's also quite informative too. Thank you!

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