[gmx-users] gmx distance

[h.alizadeh at znu.ac.ir]

Dear users,

I want to calculate distances between two groups center of masses in z direction. I use the gmx distance command:
" gmx distance -f all.xtc -s e-.25.tpr -n index.ndx -select ' com of group "PROT" plus com of group "NPROT"'  -oxyz distxyz.xvg" 

But in my output files, I don't have distxyz.xvg file.

Any help would be appreciated.  

Bests,
H.A