Name of variable for orientation log data, returned as an
m
-by-3 matrix of data points from the
Orientation sensor on the iOS device. The three data points are the
position reading in degrees, for azimuth, pitch, and roll.
Orientation is defined in relation to the X
,
Y
and Z
axes. If you set
the device down face-up on a table, the positive X-axis extends out
of the right side of the device, positive Y-axis extends out of the
top side, and the positive Z-axis extends out of the front face of
the device. This is independent of the orientation of the
device.
Azimuth is the angle between the positive Y-axis and magnetic
north, and its range is between -180 and 180 degrees.
Positive pitch is defined when the device is lying flat on a
surface and the positive Z-axis tilts towards the positive Y-axis,
with range between -90 and 90 degrees.
Positive roll is defined when the device is lying flat on a
surface and the positive Z-axis tilts towards the positive X-axis,
with range between -180 and 180 degrees.