Is My Transformation Matrix Correct?

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Discussion Overview

The discussion revolves around the correctness of a transformation matrix related to axis transformations in a three-dimensional space. Participants are examining the mapping of axes and the angles involved in the transformation process, with a focus on clarifying the relationships between the original and transformed axes.

Discussion Character

  • Technical explanation, Debate/contested, Mathematical reasoning

Main Points Raised

  • Kajal expresses uncertainty about the correctness of their transformation matrix and seeks assistance.
  • Another participant requests clarification on the mapping of the original axes (u, v, w) to the transformed axes (x, y, z).
  • A participant suggests that u should map into the y-axis, v into the z-axis, and w into the x-axis.
  • Kajal believes their calculation may be incorrect due to misunderstanding the nature of the angles involved, specifically that theta_v, theta_w, and theta_t are final rotations rather than intermediary ones.
  • Kajal specifies the angles between the original and transformed axes, noting that the angle between u and the y-axis is (90 - theta_v), between v and the z-axis is theta_t, and between w and the x-axis is (90 - theta_h).
  • Kajal reiterates the need for a final transformation matrix based on these angles.

Areas of Agreement / Disagreement

The discussion contains multiple viewpoints regarding the mapping of axes and the interpretation of angles, indicating that there is no consensus on the correctness of the transformation matrix or the calculations involved.

Contextual Notes

Participants have not fully resolved the assumptions regarding the nature of the angles and the definitions of the axes involved in the transformation, which may affect the accuracy of the transformation matrix.

kajalschopra
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Hi,

I have attached a pdf which shows clearly how I have carried out my transformations from one axis into another.

However, I am not convinced that it is right and I have described why I feel so.

I shall be grateful if someone can help me

Kajal
 

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Physics news on Phys.org
Can anyone please hekp? I am really struggling and will be extremely grateful
 
Could you please clarify in your figure, which of u,v,w maps into which of x,y,z, i.e., is x the (rotated) image of u, y of v etc?
 
u should map into the y axis
v should map into the z axis
w should map into the x axis

Thanks a lot, looking forward for the response

I think my calculation is wrong (in the pdf) because theta_v, theta_w and theta_t are final rotations (not intermediary rotations)

I need final transformation matrix

Angle between u and y-axis is (90 - theta_v) see the figure where theta_v is marked
Angle between v and z axis is theta_t (See figure theta_t is marked)
Angle between w and x-axis is (90 - theta_h). See figure where theta_h is marked

I need a transformation matrix
 

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