Re: [R] Nonlinear regression

From: Spencer Graves <spencer.graves_at_pdf.com>
Date: Tue, 20 May 2008 17:02:31 -0700

      Let's not be so hard on SAS. I thought it was marvelous when I first used it over 30 years ago.

      Spencer Graves

Bill.Venables_at_csiro.au wrote:
> ?nls
>
> (I always knew SAS *is* a DUD, but never that it has a DUD too...)
>
>
> Bill Venables
> CSIRO Laboratories
> PO Box 120, Cleveland, 4163
> AUSTRALIA
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>
> -----Original Message-----
> From: r-help-bounces_at_r-project.org [mailto:r-help-bounces_at_r-project.org]
> On Behalf Of LXu_at_hnrg.com
> Sent: Wednesday, 21 May 2008 9:23 AM
> To: r-help_at_r-project.org
> Subject: [R] Nonlinear regression
>
> Could someone help me on the following:
> SAS has DUD (Does not Use Derivatives) for nonlinear regression.
>
> Does "R" has a similar capability?
>
> I am not good at derivatives and may get my derivative wrong before
> feeding it to a nonlinear regression procedure.
>
> Any help would be much appreciated.
>
> Liu
> Hancock Forest Management NZ
> Tokoroa, New Zealand
> DDI: 07-8850387
> Mobile: 021-1576178
> A/H: 06 868 4288
> lxu_at_hnrg.com
>
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Wed 21 May 2008 - 00:07:02 GMT

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