On 1/26/13 12:25 PM, Albert wrote:
Hello:

  I am using make_ndx to make a index file in Gromacs 4.6,

make_ndx -f input.pdb

  but it said:


Copied index group 1 'Protein'
Copied index group 25 'Water_and_ions'
One of your groups is not ascending
Group is empty


What exactly did you enter at the make_ndx prompt?

-Justin

--
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Justin A. Lemkul, Ph.D.
Research Scientist
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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