05-25-2020 09:55 PM
3D Cartesian Coordinate Rotation (Direction) VI, has a input "rotation matrix type", I can not understand the Direction Angles. when I use the defaut, it is wrong.
05-26-2020 01:19 AM - edited 05-26-2020 01:22 AM
05-26-2020 02:00 AM
The Inputs of the "3D Cartesian Coordinate Rotation (Direction)" VI are explained in the documentation, e.g. here: https://zone.ni.com/reference/en-XX/help/371361R-01/gmath/3d_cartesian_coord_rotation_direction/
The three arrays to the top left are your points. Enter some coordinates other than [0, 0, 0] to see the effect of the rotation.
Also, please use a smaller font.
05-26-2020 10:47 AM
Your matrix is not a matrix of directional cosines because the determinant of it is not unity.
(You only have three degrees of freedom, so you cannot chose 9 random values. they are interdependent. How did you generate the matrix?)