Class of parts within quaternion
A quaternion is a four-part hyper-complex number used in three-dimensional representations. The four parts of the quaternion are of data type
Create two quaternions, one with an underlying data type of
single, and one with an underlying data type of
double. Verify the underlying data types by calling
classUnderlying on the quaternions.
qSingle = quaternion(single([1,2,3,4]))
qSingle = quaternion 1 + 2i + 3j + 4k
ans = 'single'
qDouble = quaternion([1,2,3,4])
qDouble = quaternion 1 + 2i + 3j + 4k
ans = 'double'
You can separate quaternions into their parts using the
parts function. Verify the parts of each quaternion are the correct data type. Recall that
double is the default MATLAB® type.
[aS,bS,cS,dS] = parts(qSingle)
aS = single 1
bS = single 2
cS = single 3
dS = single 4
[aD,bD,cD,dD] = parts(qDouble)
aD = 1
bD = 2
cD = 3
dD = 4
Quaternions follow the same implicit casting rules as other data types in MATLAB. That is, a quaternion with underlying data type
single that is combined with a quaternion with underlying data type
double results in a quaternion with underlying data type
qSingle and verify the resulting underlying data type is
q = qDouble*qSingle; classUnderlying(q)
ans = 'single'
quat— Quaternion to investigate
Quaternion to investigate, specified as a quaternion or array of quaternions.
underlyingClass— Underlying class of quaternion object
Underlying class of quaternion, returned as the character vector