- #1

dhume878

- 6

- 1

I feel I may have improperly posted this thread https://www.physicsforums.com/showthread.php?t=469331" but am just not as knowledgeable in my matrix math as I need to be. One (me) would think that somehow you should be able to get a rotation matrix from these two systems.

So I have two matrices composed of 3 orthogonal vectors

G = [1 0 0;

0 1 0;

0 0 1]

and

L = [0.96247 -0.03259 -0.266524;

0.02676 0.99932 -0.025578;

0.26718 0.018486 -0.962682]

I have a point in the global system, which i would like to rotate in the same manner one matrix is rotated from the other. (I think .. R(alpha) * R(beta) * R(gama))

It can be assumed the two systems have the same origin.

Possibly relevant

x'_vector = R_matrix * x_vector

Here is my MATLAB attempt. I feel I'm way off (no laughing!)

Again I hope I'm not being too hasty with this repost, but i didn't want to be scorned for my incorrect post location.

Thanks for any help,

Cheers!

## Homework Statement

So I have two matrices composed of 3 orthogonal vectors

G = [1 0 0;

0 1 0;

0 0 1]

and

L = [0.96247 -0.03259 -0.266524;

0.02676 0.99932 -0.025578;

0.26718 0.018486 -0.962682]

I have a point in the global system, which i would like to rotate in the same manner one matrix is rotated from the other. (I think .. R(alpha) * R(beta) * R(gama))

It can be assumed the two systems have the same origin.

## Homework Equations

Possibly relevant

x'_vector = R_matrix * x_vector

## The Attempt at a Solution

Here is my MATLAB attempt. I feel I'm way off (no laughing!)

Code:

```
x = [1 0 0];
x_p = [0.96247 -0.0325928 -0.266524];
A = x_p \ x
y = [0 1 0];
y_p = [0.0267575 0.999315 -0.0255778];
B = y_p \ y
z = [0 0 1];
z_p = [0.267175 0.0174863 0.962682];
C = z_p \ z
```

Again I hope I'm not being too hasty with this repost, but i didn't want to be scorned for my incorrect post location.

Thanks for any help,

Cheers!

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