Re: [R] Is DUD available in nls()?

2013-04-02 Thread Ben Bolker
Bert Gunter gunter.berton at gene.com writes: I certainly second all Jeff's comments. **HOWEVER** : http://www.tandfonline.com/doi/pdf/10.1080/00401706.1978.10489610 IIRC, DUD's provenance is old, being originally a BMDP feature. If you want to do derivative-free nonlinear

Re: [R] Is DUD available in nls()?

2013-04-02 Thread Prof J C Nash (U30A)
that approximates the surface and minimizes that. John Nash Date: Tue, 2 Apr 2013 07:22:33 + From: Ben Bolker bbol...@gmail.com To: r-h...@stat.math.ethz.ch Subject: Re: [R] Is DUD available in nls()? Message-ID: loom.20130402t091830-...@post.gmane.org Content-Type: text/plain; charset=us-ascii

Re: [R] Is DUD available in nls()?

2013-04-02 Thread Hans W Borchers
Bert Gunter gunter.berton at gene.com writes: I certainly second all Jeff's comments. **HOWEVER** : http://www.tandfonline.com/doi/pdf/10.1080/00401706.1978.10489610 IIRC, DUD's provenance is old, being originally a BMDP feature. Thanks for the pointer. That seems to be an interesting

[R] Is DUD available in nls()?

2013-04-01 Thread qi A
SAS has DUD (Does not Use Derivatives)/Secant Method for nonlinear regression, does R offer this option for nonlinear regression? I have read the helpfile for nls() and could not find such option, any suggestion? Thanks, Derek [[alternative HTML version deleted]]

Re: [R] Is DUD available in nls()?

2013-04-01 Thread Jeff Newmiller
a) Read the Posting Guide. It will tell you things like: 1) Don't post in HTML format. Adjust your email client appropriately. 2) Don't repost. Your emails are all there, looking silly next to each other. 3) Use the search facilities yourself, such as RSiteSearch(). b) Regarding your DUD

Re: [R] Is DUD available in nls()?

2013-04-01 Thread Bert Gunter
I certainly second all Jeff's comments. **HOWEVER** : http://www.tandfonline.com/doi/pdf/10.1080/00401706.1978.10489610 IIRC, DUD's provenance is old, being originally a BMDP feature. -- Bert On Mon, Apr 1, 2013 at 10:59 AM, Jeff Newmiller jdnew...@dcn.davis.ca.uswrote: a) Read the Posting