| N-body integrator [message #73292] |
Wed, 03 November 2010 13:45  |
Gray
Messages: 253
Registered: February 2010
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Senior Member |
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Hi all,
Does anyone have an N-body integrator written (a) in IDL, or (b) in a
DLM? I wrote an RK4 version, but there are much more efficient
algorithms out there, and I was wondering if anyone had anything.
Thanks!
--Gray
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| Re: N-body integrator [message #73407 is a reply to message #73292] |
Thu, 04 November 2010 07:25  |
Jeremy Bailin
Messages: 618
Registered: April 2008
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Senior Member |
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On Nov 3, 4:45 pm, Gray <grayliketheco...@gmail.com> wrote:
> Hi all,
>
> Does anyone have an N-body integrator written (a) in IDL, or (b) in a
> DLM? I wrote an RK4 version, but there are much more efficient
> algorithms out there, and I was wondering if anyone had anything.
> Thanks!
>
> --Gray
I have a Barnes-Hut tree force calculator with a leapfrog integrator
that's written in IDL... the force calculator is standalone, but the
integrator would require a few minutes of work to extract from the
piece of code that it's in. Let me know if you need it and I can get
the main parts out for you.
But... you *really* don't want to do it in IDL. It's inherently an
iterative problem, which is not well-suited to IDL. Write it in C or
python or something. :-)=
-Jeremy.
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