[gmx-users] How to extract the first three PC's cosine content from the "coscont.xvg" file?

a a patd_2 at hotmail.com
Tue Apr 10 05:28:59 CEST 2012

Dear Sir/Madam,
I used the following steps to get the cosine content for my trajectories, could you please kindly tell me how to interpret the results?
/usr/local/gromacs/bin/g_covar_d -s ../test.pdb -f test.binpos -o -v
/usr/local/gromacs/bin/g_anaeig_d -s ../test.pdb -f test.binpos -v eigenvec.trr -proj
/usr/local/gromacs/bin/g_analyze_d -f proj.xvg -cc -n 8
In the final "coscont.xvg", I found the followings:
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++# This file was created Tue Apr 10 10:59:12 2012# by the following command:# /usr/local/gromacs/bin/g_analyze_d -f proj.xvg -cc -n 8## g_analyze_d is part of G R O M A C S:## Giant Rising Ordinary Mutants for A Clerical Setup#@    title "Cosine content"@    xaxis  label "set / half periods"@    yaxis  label "cosine content"@TYPE xy 1 0.602921 2 0.011185 3 0.0659901 4 0.425943 5 0.204306 6 0.439315 7 0.0288551 8 0.0830944++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I read some literature quoted the first three PCs's cosine content, if the cosine content close to zero, the trajectory is converged.
How can I extract the first three PCs's cosine content from the above "conscont.xvg" file?  Please kindly help.
Best regards,
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