[gmx-users] How can measure the end-yo end distance of a peptide from the .xtc file

[haifeng YUAN]

Dear all,
         I would like to get the distance information of the small 
peptide chain from the .xtc file, but the g_mindist seems can only get 
the distance information from one group to another. How I can get the 
end to end distance? I mean  the distance between an end atom  of the 
short chain to the other end atom?
         Thanks in advance.

Cheers,
Haifeng YUAN