How can you estimate the final position of a gyroscope graphically?
You integrate angular velocity over time to get angular displacement. But then you run into the issue of the order of rotations. After all, readings are coming in on all three axis simultaneously so how do you know which order to apply the rotations in? Luckily, as time intervals decrease towards zero, angular velocities on each axis approach being applied simultaneously. But your waveforms were not constructed for that complication to ever be an issue.