Justin I already tried this I tried this command--->
trjconv -f myprotein.trr -o trajout_whole.trr -pbc whole this was showing this error "can not open file topol.tpr" then I repeated the same command with "-s topol.tpr" then trjconv -f trajout_whole.trr -o trajout_nojump.trr -pbc nojump then g_rms -s topol.tpr -f trajout_nojump.trr -o trajout_nojump_rmsd.xvg -xvgr but now this is showing Fatal Error " Molecule in topology has atom numbers below and above natoms. you are probably trying to use a trajectory which does not match the first 330 atoms of the run input file. You can make a matching run input file with tpbconv." with regards Anamika -- Anamika Awasthi, PhD DBT-Postdoctoral Fellow Laboratory of Structural Biology Centre for DNA Fingerprinting and Diagnostics (CDFD) ECIL Road, Nacharam Hyderabad 500 076 INDIA
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