Effacer les filtres
Effacer les filtres

rotation matrix between two coordinate systems matlab

42 vues (au cours des 30 derniers jours)
ha ha
ha ha le 14 Sep 2017
Modifié(e) : ha ha le 20 Sep 2017
I have a coordinate system A
Example: 3 principal vector direction of system A are:
e0= [0.3898 -0.0910 0.9164]
e1= [0.6392 0.7431 -0.1981]
e2= [-0.6629 0.6630 0.3478]
And, I have a cartesian coordinate system B with three unit vector
nx=[1 0 0]
ny=[0 1 0]
nz=[0 0 1]
How can i find transformation matrix between two coordinate systems A & B ?
  2 commentaires
Güinther SAIBRO
Güinther SAIBRO le 14 Sep 2017
Modifié(e) : Güinther SAIBRO le 14 Sep 2017
I didn't understand why do you need the last space vectors with you already have the transformation matrix.
If you are trying to do a space transformation from R^n to R^m you just need a m x n matrix and to multiply this matrix to a column vector in R^n.
In your case, you can write:
A= [0.3898 -0.0910 0.9164; 0.6392 0.7431 -0.1981; -0.6629 0.6630 0.3478];
P = [ [x'1;y'1;z'1] [x'2;y'2;z'2] ... ] % The idea is that you need column vectors of x,y and z.
and just P_R3 = A*P;
I believe that this can solve your problem.
ha ha
ha ha le 16 Sep 2017
sorry. Please see "edit question"

Connectez-vous pour commenter.

Réponse acceptée

Jan
Jan le 16 Sep 2017
E = [e0; e1; e2]
is the transformation matrix already for the rotation. There seems to be a translation of the origin in addition, such that you need to add this vector afterwards also.
  1 commentaire
ha ha
ha ha le 20 Sep 2017
Modifié(e) : ha ha le 20 Sep 2017
i think my question is not clear. Please see my new question:
https://jp.mathworks.com/matlabcentral/answers/357494-how-to-find-rotation-matrix-from-vector-to-another

Connectez-vous pour commenter.

Plus de réponses (0)

Catégories

En savoir plus sur 線形代数 dans Help Center et File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!