I am sorry that I misread the question. that keyword won't help.
On Thu, Sep 28, 2017 at 9:45 PM, R zu <rzu512.gmail.com> wrote:
> Hi.
>
> trajout has an onlyframes keyword:
>
> http://archive.ambermd.org/201501/0224.html
>
> I guess it probably works for simulations as well:
>
> https://sunxiaoquan.wordpress.com/2015/07/29/extract-neat-
> trajectory-file-from-irregular-amber-trajectory-files/
>
>
>
> On Thu, Sep 28, 2017 at 2:23 PM, Hughes, Travis <travis.hughes.mso.umt.edu
> > wrote:
>
>> Is there any built in way (without knowing how many frames are in a
>> trajectory) to trajout only the last say 500 frames of a trajectory?
>> for example something like this:
>>
>> trajin sometraj.nc 1 last 1
>> trajout sometrajlast500.nc -500 last 1
>>
>>
>> We can script something to find the length of the trajectory and then use
>> that info to do this, but is there something easy and built in to cpptraj?
>>
>> Thanks,
>> Travis
>>
>>
>> Travis Hughes
>> Assistant Professor
>> Biomedical and Pharmaceutical Sci.
>> Center for Biomolecular Structure and Dynamics
>> University of Montana, Missoula
>> travis.hughes.umontana.edu<mailto:travis.hughes.umontana.edu>
>> (406) 243-2750
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
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>>
>
>
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Received on Thu Sep 28 2017 - 19:00:02 PDT
