From: Valerio Sorichetti (
Date: Mon Jul 10 2017 - 09:05:57 CDT


I have tried, but for some reason it works on the nanoparticles but not on
the polymers.

But I think I understand where the problem is. My data are in this format:

Atom_id type x y z

where type=1 for the monomers and type=2 for the nanoparticles.
The first 100 monomer coordinates represent the first polymer, the second
100 the second polymer and so on...

So I think that for vmd there is no way to know that the monomers are part
of different polymers.

Maybe I have to assign a different type to every polymer? Or is there
another way?

Thank you very much,

2017-07-10 15:44 GMT+02:00 Tim Moore <>:

> You can select 'Fragment' for the Coloring Method.
> On Mon, Jul 10, 2017 at 5:13 AM, Valerio Sorichetti <
>> wrote:
>> Hello,
>> I am simulating a system of bead-spring polymer chains and nanoparticles,
>> and I was wondering if there is any way to color every polymer chain with a
>> different (random) color.
>> The data are in LAMMPS format.
>> Thank you very much,
>> VS
> --
> Tim Moore