VMD-L Mailing List

From: fan li (fanliqmul_at_gmail.com)
Date: Tue Jul 06 2021 - 15:06:26 CDT

Dear Jason and Vasisita

Thanks for your reply.

On Tue, 6 Jul 2021 at 16:28, Jason Smith <jason_smith_18_at_sfu.ca> wrote:

> Is this something you need to do often or a once off? As a once off, you
> could use a random number generator for e.g. resid or whatever you like,
> and use those as the selection criteria. tcl does have a generator, not
> sure if it's implemented in vmd, though.
>
>
> https://urldefense.com/v3/__https://wiki.tcl-lang.org/page/rand__;!!DZ3fjg!vQ17K4PaRY0mnhqqDpjE0Uyt2N-9r5LaROKWJ2Z74QOYoS7RM_Nw-NpNt3GpVE7mlA$
> rand <https://urldefense.com/v3/__https://wiki.tcl-lang.org/page/rand__;!!DZ3fjg!vQ17K4PaRY0mnhqqDpjE0Uyt2N-9r5LaROKWJ2Z74QOYoS7RM_Nw-NpNt3GpVE7mlA$ >
> wiki.tcl-lang.org
> Tclers wiki
>
>
>
>
> Cheers,
> -
> Jason Smith
> Post-Doctoral Fellow
> Robert N. Young Lab, Simon Fraser University
> 8888 University Drive, Burnaby, BC, V5A-1S6
> Canada
>
> ------------------------------
> *From:* owner-vmd-l_at_ks.uiuc.edu <owner-vmd-l_at_ks.uiuc.edu> on behalf of
> fan li <fanliqmul_at_gmail.com>
> *Sent:* Tuesday, 6 July 2021 3:23:48 AM
> *To:* vmd-L
> *Subject:* vmd-l: Randomly select molecules and delete them
>
> Dear VMD users
>
> I have a group of molecules with resname PRO, I would like to randomly
> select 30% of those molecules then delete them. Finally, I would like to
> write out the PDB and psf files. I do know how to select molecules by
> atomselection function, but I don't how to randomly select molecules.
>
> Any help would be appreciated.
>
> Thank you
>
> Fan
>
>