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Re: chi^2 minimisations & calling c [message #36701 is a reply to message #36700]

Tue, 14 October 2003 09:52

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

danb@star.herts.ac.uk (Dan B) writes:
> Hi peeps.
>
> Before I go and get Ronn Klings book on calling c from IDL am I going
> to be able
> to code a chi^2 minimisation routine?

We can't speak for your abilities to code a minimization routine.
It's certainly possible, and IDL doesn't forbid it.

Strange, but I find that I have zero sympathy for people using DLMs
and CALL_EXTERNAL. Especially in a case like this, where good chi^2
minimization routines exist in IDL already, why reinvent the wheel?
Debugging the internal interface to IDL will take a lot of time.

Craig

P.S. For example MPFIT,
http://cow.physics.wisc.edu/~craigm/idl/idl.html

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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@REMOVEcow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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[Message index]

		Re: chi^2 minimisations & calling c By: Craig Markwardt on Thu, 16 October 2003 10:50
		Re: chi^2 minimisations & calling c By: Paul Van Delst[1] on Thu, 16 October 2003 10:41
		Re: chi^2 minimisations & calling c By: danb on Thu, 16 October 2003 10:15
		Re: chi^2 minimisations & calling c By: David Fanning on Thu, 16 October 2003 07:44
		Re: chi^2 minimisations & calling c By: danb on Thu, 16 October 2003 07:16
		Re: chi^2 minimisations & calling c By: Rick Towler on Wed, 15 October 2003 10:52
		Re: chi^2 minimisations & calling c By: Richard French on Wed, 15 October 2003 04:09
		Re: chi^2 minimisations & calling c By: danb on Wed, 15 October 2003 02:52
		Re: chi^2 minimisations & calling c By: Rick Towler on Tue, 14 October 2003 14:46
		Re: chi^2 minimisations & calling c By: Rick Towler on Tue, 14 October 2003 10:21
		Re: chi^2 minimisations & calling c By: Craig Markwardt on Tue, 14 October 2003 09:52

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