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...226013 India http://bit.ly/2A2PhD AEA Job profile : http://bit.ly/AEAamit FMA 2 page profile : http://bit.ly/FMApdf2p SSRN top10% downloaded since July 2017: http://ssrn.com/author=2665511 ________________________________________________________________________ On Thu, Jan 31, 2019 at 7:22 PM ProfJCNash <profjcnash at gmail.com> wrote: > This is not about the failure on some platforms, which is an important > issue. However, what is below may provide a temporary workaround until > the source of the problem is uncovered. > > FWIW, the problem seems fairly straightforward for m...

...s being called (e.g. in a line search > or in derivative estimation), but some plotting or other postprocessing can ususally figure that out. > > > Bill Dunlap > TIBCO Software > wdunlap tibco.com <http://tibco.com> > > On Mon, Jul 30, 2018 at 11:35 AM, J C Nash <profjcnash at gmail.com <mailto:profjcnash at gmail.com>> wrote: > > In looking at rootfinding for the histoRicalg project (see gitlab.com/nashjc/histoRicalg > <http://gitlab.com/nashjc/histoRicalg>), > I thought I would check how uniroot() solves some problems. The fol...

...shown that the problem can be tackled very simply too. Best, JN On 2023-08-19 18:42, Paul Bernal wrote: > Thank you so much Dr. Nash, I truly appreciate your kind and valuable contribution. > > Cheers, > Paul > > El El s?b, 19 de ago. de 2023 a la(s) 3:35 p.?m., J C Nash <profjcnash at gmail.com <mailto:profjcnash at gmail.com>> escribi?: > > Why bother. nlsr can find a solution from very crude start. > > Mixture <- c(17, 14, 5, 1, 11, 2, 16, 7, 19, 23, 20, 6, 13, 21, 3, 18, 15, 26, 8, 22) > x1 <- c(69.98, 72.5, 77.6, 79.98, 74.98, 8...

However, trying this on Linux Mint gave package ?installr? is not available (for R version 3.4.2) Has the package not been updated yet? JN Try the installr package. It was designed for this purpose. On Fri, Nov 10, 2017 at 11:49 AM, Bond, Stephen <Stephen.Bond at cibc.com> wrote: > Is there a utility which will allow me to upgrade my R version and update all packages from the old

...d improvement? We might as well start with something you'd like looked at. Then I'll ask if there are interested people and see what can be done about getting a framework set up to work on one of those documents. JN On 16-04-12 10:52 AM, Duncan Murdoch wrote: > On 12/04/2016 9:21 AM, ProfJCNash wrote: >> >>>> "The documentation aims to be accurate, not necessarily clear." >> > I notice that none of the critics >> > in this thread have offered improvements on what is there. >> >> >> This issue is as old as documented things. W...

On 12/04/2016 11:30 AM, ProfJCNash wrote: > Thanks Duncan, for the offer to experiment. > > Can you suggest a couple of your pages that you think might need > improvement? We might as well start with something you'd like looked at. I don't think I can. I don't intentionally write obscure documentation, so...

...a wiki (self-correcting?) would help avoid this. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Tue, Apr 12, 2016 at 6:21 AM, ProfJCNash <profjcnash at gmail.com> wrote: > >>>>> "The documentation aims to be accurate, not necessarily clear." >> I notice that none of the critics >> in this thread have offered improvements on what is there. > > > This issue is as old as documented...

>>>> "The documentation aims to be accurate, not necessarily clear." > I notice that none of the critics > in this thread have offered improvements on what is there. This issue is as old as documented things. With software it is particularly nasty, especially when we want the software to function across many platforms. Duncan has pointed out that critics need to step

...r than loading *.Rdata and I wanted to proof that for my system and R version. But thanks anyway for your time. Cheers Raphael > -----Urspr?ngliche Nachricht----- > Von: Jeff Newmiller [mailto:jdnewmil at dcn.davis.ca.us] > Gesendet: Dienstag, 22. August 2017 18:33 > An: J C Nash <profjcnash at gmail.com>; r-help at r-project.org; Felber Raphael > Agroscope <raphael.felber at agroscope.admin.ch> > Betreff: Re: [R] How to benchmark speed of load/readRDS correctly > > Caching happens, both within the operating system and within the C > standard library. Ostensibl...

...ic media) can behave quite differently for the same application level use case, so a generic discussion at the R language level (this mailing list) can be almost impossible to sort out intelligently. -- Sent from my phone. Please excuse my brevity. On August 22, 2017 7:11:39 AM PDT, J C Nash <profjcnash at gmail.com> wrote: >Not convinced Jeff is completely right about this not concerning R, >since I've found that the application language (R, >perl, etc.) makes a difference in how files are accessed by/to OS. He >is certainly correct that OS (and versions) are >where the ac...

Thank you so much Dr. Nash, I truly appreciate your kind and valuable contribution. Cheers, Paul El El s?b, 19 de ago. de 2023 a la(s) 3:35 p. m., J C Nash < profjcnash at gmail.com> escribi?: > Why bother. nlsr can find a solution from very crude start. > > Mixture <- c(17, 14, 5, 1, 11, 2, 16, 7, 19, 23, 20, 6, 13, 21, 3, 18, 15, > 26, 8, 22) > x1 <- c(69.98, 72.5, 77.6, 79.98, 74.98, 80.06, 69.98, 77.34, 69.99, > 67.49, 67.51, 77.63,...

This issue does not exist on Linux. My Ubuntu updates both R and all packages. Stephen B -----Original Message----- From: J C Nash [mailto:profjcnash at gmail.com] Sent: Friday, November 10, 2017 1:19 PM To: r-help; RICHARD M. HEIBERGER; Bond, Stephen Subject: Re: [R] update R version in windows However, trying this on Linux Mint gave package ?installr? is not available (for R version 3.4.2) Has the package not been updated yet? JN Try...

Not convinced Jeff is completely right about this not concerning R, since I've found that the application language (R, perl, etc.) makes a difference in how files are accessed by/to OS. He is certainly correct that OS (and versions) are where the actual reading and writing happens, but sometimes the call to those can be inefficient. (Sorry, I've not got examples specifically for file

As the original coder (in mid 1970s) of BFGS, CG and Nelder-Mead in optim(), I've been pushing for some time for their deprecation. They aren't "bad", but we have better tools, and they are in CRAN packages. Similarly, I believe other optimization tools in the core (optim::L-BFGS-B, nlm, nlminb) can and should be moved to packages (there are already 2 versions at least of LBFGS

...concern is that the core should be focused on the programming language aspects. The computational math and some of the more intricate data management could better be handled by folk outside the core. JN On 2019-03-04 9:12 a.m., Avraham Adler wrote: > On Mon, Mar 4, 2019 at 5:01 PM J C Nash <profjcnash at gmail.com <mailto:profjcnash at gmail.com>> wrote: > > As the original coder (in mid 1970s) of BFGS, CG and Nelder-Mead in optim(), I've > been pushing for some time for their deprecation. They aren't "bad", but we have > better tools, and they...

In looking at rootfinding for the histoRicalg project (see gitlab.com/nashjc/histoRicalg), I thought I would check how uniroot() solves some problems. The following short example ff <- function(x){ exp(0.5*x) - 2 } ff(2) ff(1) uniroot(ff, 0, 10) uniroot(ff, c(0, 10), trace=1) uniroot(ff, c(0, 10), trace=TRUE) shows that the trace parameter, as described in the Rd file, does not seem to be

...gt; > Cheers, > Bert > Bert Gunter > > "The trouble with having an open mind is that people keep coming along > and sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) > > > On Tue, Apr 12, 2016 at 6:21 AM, ProfJCNash <profjcnash at gmail.com> wrote: >> >>>>>> "The documentation aims to be accurate, not necessarily clear." >>> I notice that none of the critics >>> in this thread have offered improvements on what is there. >> >> >> This i...

...get it working) and trusty and report back. It may be significant that my chromebook has an ARM processor. I don't know about the details of how this works, but perhaps some pieces of the R install haven't been ported to the appropriate architecture? Matt On Mon, Mar 21, 2016 at 1:04 PM, ProfJCNash <profjcnash at gmail.com> wrote: > Since 14.04 is the Long Term Support version, which also is used by > Linux Mint, it's not really outdated, and a lot of folk, myself > included, use that stream (my machine says Linux Mint 17.1, but I think > that is simply the splash scree...

On 12/04/2016 9:21 AM, ProfJCNash wrote: > >>>> "The documentation aims to be accurate, not necessarily clear." > > I notice that none of the critics > > in this thread have offered improvements on what is there. > > > This issue is as old as documented things. With software it is >...

Since 14.04 is the Long Term Support version, which also is used by Linux Mint, it's not really outdated, and a lot of folk, myself included, use that stream (my machine says Linux Mint 17.1, but I think that is simply the splash screen). I say stream, because the kernel and other infrastructure are being updated, though probably not to the level Dirk prefers, and I do use other distros for