[gmx-users] Generate velocity frame

[Collins Nganou]

Dear gmx-users.

Greetings. someone can explain me how can I do to correct the following
missing:

Last frame         50 time -20835.531
No frames found for average velocity, will not write veloc.pdb
No frames found for average force, will not write force.pdb

 g_traj_d -f eigenvec.xtc -s 3ns.tpr -n index.ndx -ox coord.xvg -ov
veloc.xvg -ot temp.xvg -ekt ektrans.xvg -ekr ekrot.xvg -cv veloc.pdb -cf
force.pdb -vd veldlist.xvg
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