VMD-L Mailing List

From: Tim Isgro (timisgro_at_ks.uiuc.edu)
Date: Wed Apr 14 2004 - 22:49:55 CDT

Hi Chen,
In text mode:
> mol load psf mypsf.psf
> animate read dcd mydcd.dcd skip 10
> [atomselect top all] writedcd mysmalldcdfile.dcd

To save size, you could also eliminate waters, for instance, from your
trajectory if you *know* they're not important, but deleting that type
of information is obviously more dangerous than dropping frames.

Tim

On Wed, 14 Apr 2004, Chen Yongzhi wrote:

> I got a huge trajectory dcd file. It is about 2.2G size. For analysis
> convenient, I want to reduce it by selecting a frame from each 10 frames.
> If I could load it in graphic mode, I could use "File/Save Coordinates/Save
> Trajectory" to get the new dcd file. But it is too huge to load. In Tcl
> text mode, I could use "mol" command to load the pdb and dcd files. But I
> can not find the corresponding command to the "save trajectory" function in
> the graphic mode. Anyone could help me out? Thanks.
>
> Yongzhi Chen
>
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