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Re: [ESPResSo] polymer command

From: Torsten Stuehn
Subject: Re: [ESPResSo] polymer command
Date: Wed, 04 Mar 2009 10:30:21 +0100
User-agent: Thunderbird (X11/20080213)

Hi all,

the polymer command has been fixed. The density of bond vectors is now
uniformly distributed ( OLD_RW_VERSION in myconfig.h has to be undefined ).
Currently only the CVS version has been fixed but there will be a new
ESPResSo release soon.


Axel Arnold wrote:
Hi all,

since about December 2007 (that is, version 2.0.4w), the polymer command is broken (well, it never really worked, but at least approximately...).

If you do not specify specific angles between adjacent monomers, the current implementation does two things:

- if you define OLD_RW_VERSION in myconfig.h, the density of bond vectors at the poles is slightly too high

- if you do not define OLD_RW_VERSION (the default), then you get correct bond vectors, but only in the upper half space, i.e. your polymer just grows in one direction.

Torsten will fix this ASAP.


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