[gmx-users] make index group

Justin A. Lemkul jalemkul at vt.edu
Wed Jul 1 14:09:14 CEST 2009

Mark Abraham wrote:
> Bing Bing wrote:
>> Dear all,
>> I'm trying to perform order parameter analysis. I 've use :-
>> make_ndx_d -f xxx.tpr -o sn1.ndx
>>  > 15 & a Cxx |.......
>>  >q
>> i've got this error :-
>> Group 15 not exist.
> So use a group that does exist. If you're copying an index group 
> creation recipe from some tutorial, go back to that and understand what 
> this step is designed to achieve, and then adjust it to suit your new 
> context.

In addition to Mark's advice, please see the wiki page for g_order; it explains 
exactly how to create the necessary index groups.  If you're merging groups on 
into one, as it appears you are, you're doing it wrong.




Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080


More information about the gromacs.org_gmx-users mailing list