From: Bjoern Olausson (namdlist_at_googlemail.com)
Date: Tue Jun 07 2011 - 05:27:58 CDT

On Tuesday 07 June 2011 11:39:35 Joyce Tan wrote:
> Hi,
>
> I had my simulation extended to 20ns after its first run of 5ns.
>
> Then I realised that the total frames I have at 20ns is too large and I
> would like to re-save them at less frames.
>
> I saved them by setting dcdfreq at 250. Now I would like to decrease the
> number of frames by saving the dcd at every 1000 steps.
>
> Anyway I can do this?
>
> Thanks
>
> Regards,
> Joyce

Use "catdcd" for this task:
http://www.ks.uiuc.edu/Development/MDTools/catdcd/

Cheers,
Bjoern

-- 
Bjoern Olausson
Martin-Luther-Universität Halle-Wittenberg 
Fachbereich Biochemie/Biotechnologie
Kurt-Mothes-Str. 3
06120 Halle/Saale
Phone: +49-345-55-24942