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Numerical Recipes diffs? [message #6376]

Wed, 19 June 1996 00:00

kachun
Messages: 7
Registered: June 1996

Junior Member

Does anyone know what IDL did between IDL3 and IDL4 as far as
the numerical recipes subroutines go? I've been testing a fitting
program that uses the LUDCMP and LUBKSB routines form _Numerical
Recipes_, and I've been using IDL's canned routines. The canned
routines got name changes during the switch from IDL3 to IDL4,
from "nr_ludcmp" and "nr_lubksb" to "ludc" and "lusol". That's
not all though--somehow the code got changed around so that I
get different results depending on which version of IDL I use
even if the input is exactly the same!

I don't think IDL provides the source for these routines in their
libraries; they leave them as executables. So does anyone know
what IDL did between versions, or should I just forget about this
and rewrite everything from scratch (which would be really annoying)?
--
--kachun +** Center for Astrophysics and Space Astronomy **+
+** University of Colorado, Boulder **+
+** Email: kachun@casa.colorado.edu **+
+** http://casa.colorado.edu/~kachun **+

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Re: Numerical Recipes [message #9882 is a reply to message #6376]

Wed, 17 September 1997 00:00

Ewan A. Macpherson
Messages: 14
Registered: December 1996

Junior Member

Dave Klassen wrote:

> I've been looking for a nice easy way to maximize a fairly complex
> function using IDL. I know that there are many Numerical Recipes
> routines built into IDL, but not the one I need. I've used the
> NR routine called AMOEBA before to minimize a chi-squared
> function and now I'd like to try to use it to maximize a
> correlation function.

I've written a PV-WAVE version of AMOEBA. I can't vouch for its
efficiency, but let me know if you want to use it as a starting point.

--
Ewan Macpherson <macpherson@waisman.wisc.edu>
Hearing Development Research Lab, Waisman Center
University of Wisconsin - Madison
http://www.waisman.wisc.edu/~macpherson/

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