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Can somebody help me to modify this code?

2 次查看(过去 30 天)
Darsana P M
Darsana P M 2018-5-2
关闭: MATLAB Answer Bot 2021-8-20
I am working with quaternion calculus. So inorder to find the quaternion rotation matrix,
Brot = q.B.(q^-1)
then to find B,
B = (q^-1). Brot.q
I was trying to find these values B and Brot in matlab. But I got different answers. Can somebody tell me the cause for the mistake?
q1=[4 3 2 6];
q2= qInv(q1);
B=[1 2 3;4 5 6;7 8 9];
Q1=q1(2:4);
Q2=q2(2:4);
J= Q1*B;
JJ=J*Q2;
KK= Q2*JJ;
JK= KK*Q1;
Can somebody help me to solve this?

回答(1 个)

James Tursa
James Tursa 2020-5-22
In this
Brot = q.B.(q^-1)
and this
B = (q^-1). Brot.q
expression, the dot (.) is likely supposed to represent quaternion multiply, not standard matrix multiply as you seem to be doing.

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