[gmx-users] How to interpret g_principal output calculates

[Jennifer Vo]

Dear All,
I am trying to analyze how protein rotating in a mixture of organic solvent
and water. I thought g_principal could help by checking the (xyz) of the
whole protein over the time. The output gave 4 x.xvg files and I am not
sure how to interpret them. Can I see the movement of protein by plotting
the xyz vector?

Many thanks in advance.
Regards,
Jennifer