# [Chimera-users] Match showmatrix true motion in original coordinates

Elaine Meng meng at cgl.ucsf.edu
Tue Aug 13 08:47:40 PDT 2019

```Hi Ahmad,
It sounds like before you used this match command, earlier in the session you had already moved #76 separately from #2.  So the first matrix is just the change in position of #76 from this one match command, whereas the second matrix has all of its position changes (in the whole session since file opening) relative to #2.
Regards,
Elaine
-----
Elaine C. Meng, Ph.D.
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Aug 13, 2019, at 6:11 AM, Ahmad Khalifa <underoath006 at gmail.com> wrote:
>
> Hi,
>
> Running match showmatrix true, gives two matrices. What's the difference between the two? I already saved the file after fitting it so it should have only one set of coordinates, its original coordinates?!
>
> Regards
>
> Motion of #76 in #2 coordinate system
>   Matrix rotation and translation
>      0.99998889  -0.00169318   0.00440013  -1.57825672
>      0.00165962   0.99996960   0.00761849  -4.96792547
>     -0.00441290  -0.00761111   0.99996130 169.74075587
>   Axis  -0.85023004   0.49200930   0.18717833
>   Axis point   0.00000000 21533.64775327 2718.66675667
>   Rotation angle (degrees)   0.51315730
>   Shift along axis  30.66940614
> Motion of #76 original coordinates in #2 coordinate system
>   Matrix rotation and translation
>      0.78916125   0.61416829   0.00467203 -143.02960322
>     -0.61417583   0.78916918   0.00023085 242.10381668
>     -0.00354524  -0.00305162   0.99998906  98.04867640
>   Axis  -0.00267220   0.00668954  -0.99997405
>   Axis point 281.92931592 330.08522286   0.00000000
>   Rotation angle (degrees)  37.89294229
>   Shift along axis -96.04436567
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