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Re: [Help-gsl] Step-size in gsl_siman_solve
From: |
Brian Gough |
Subject: |
Re: [Help-gsl] Step-size in gsl_siman_solve |
Date: |
Mon, 23 Apr 2007 18:27:16 +0100 |
User-agent: |
Wanderlust/2.14.0 (Africa) Emacs/21.3 Mule/5.0 (SAKAKI) |
At Mon, 23 Apr 2007 16:48:43 +1000,
John Pye wrote:
> I have a problem involving placement of 2-D shapes into as tight a
> packing as possible. As the temperature drops in the siman solver, the
> only steps that are likely to be of any use are smaller steps (large
> steps will cause my shapes to collide). Is there any way I can use the
> GSL siman routine to take_steps but with a reducing step size, or with a
> step size that is a function of temperature? Or will this require a
> modification to the gsl_siman_solve implementation?
There is no way to change the step size within gsl_siman_solve but you
could perform the cooling in stages, reducing the step size and
temperature subsequently on each call to gsl_siman_solve.
--
Brian Gough
Network Theory Ltd,
Publishing Free Software Manuals --- http://www.network-theory.co.uk/