I guess you have not made your index file correctly. It should contain only the group for which you will calculate the order parameter.
On Sat, Feb 15, 2020 at 3:21 PM Devargya Chakraborty < devargyachakraborty....@gmail.com> wrote: > i want to calculate the order prameter between two carbon atom namrd C01 > and C03 in my topology file but while calculating, i am getting the > following error. > > Taking z axis as normal to the membrane > Reading file nvt.tpr, VERSION 2019.1 (single precision) > Using following groups: > Groupname: System First atomname: C01 First atomnr 0 > Groupname: Other First atomname: C01 First atomnr 0 > Groupname: EMI First atomname: C01 First atomnr 0 > Groupname: NSC First atomname: NBT First atomnr 760 > Groupname: Water First atomname: OW First atomnr 1360 > Groupname: SOL First atomname: OW First atomnr 1360 > Groupname: non-Water First atomname: C01 First atomnr 0 > Groupname: C01 First atomname: C01 First atomnr 0 > Groupname: C04 First atomname: C04 First atomnr 1 > Groupname: C03 First atomname: C03 First atomnr 2 > Groupname: H07 First atomname: H07 First atomnr 3 > Groupname: H09 First atomname: H09 First atomnr 4 > Groupname: H08 First atomname: H08 First atomnr 5 > Groupname: C05 First atomname: C05 First atomnr 6 > Groupname: H0B First atomname: H0B First atomnr 7 > Groupname: H0C First atomname: H0C First atomnr 8 > Groupname: H0D First atomname: H0D First atomnr 9 > Groupname: N00 First atomname: N00 First atomnr 10 > Groupname: C06 First atomname: C06 First atomnr 11 > Groupname: H0F First atomname: H0F First atomnr 12 > Groupname: C0N First atomname: C0N First atomnr 13 > Groupname: H0O First atomname: H0O First atomnr 14 > Groupname: H0P First atomname: H0P First atomnr 15 > Groupname: H0Q First atomname: H0Q First atomnr 16 > Groupname: N02 First atomname: N02 First atomnr 17 > Groupname: H0E First atomname: H0E First atomnr 18 > Groupname: NBT First atomname: NBT First atomnr 760 > Groupname: SBT First atomname: SBT First atomnr 761 > Groupname: OBT First atomname: OBT First atomnr 763 > Groupname: CBT First atomname: CBT First atomnr 764 > Groupname: F1 First atomname: F1 First atomnr 768 > > Reading frame 0 time 0.000 Number of elements in first group: > 10360 > > ------------------------------------------------------- > Program: gmx order, version 2019.1 > Source file: src/gromacs/gmxana/gmx_order.cpp (line 546) > > Fatal error: > grp 1 does not have same number of elements as grp 1 > > can anybody help. > > Thanks > -- > Gromacs Users mailing list > > * Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before > posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or > send a mail to gmx-users-requ...@gromacs.org. > -- *Best Regards* Shakkira E PhD student INSPIRE Scholar Department of Chemistry sdmdlab.xyz IIT Patna Bihta Patna 801106 -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.