[R] Error with Segmented package

[David Winsemius]

On Oct 10, 2015, at 6:58 AM, andrew haywood wrote:

> Thanks Dave, 
> 
> when I run traceback() the following output
> 
> Error in if (psi == Inf) psi <- median(XREGseg) : 
>   missing value where TRUE/FALSE needed
> > traceback()
> 2: segmented.lm(lm(y ~ x, data = data), seg.Z = ~x, psi = NA, control = seg.control(K = 1))
> 1: segmented(lm(y ~ x, data = data), seg.Z = ~x, psi = NA, control = seg.control(K = 1))
> 
> 
> I am unsure how to interpret this. 
> 
> In addition when I run the command 
> 
> options(error="browser")

Sorry. Should have been:

options(error = recover) 

See ?recover and ?browser

-- 
David.

> 
> 
> I get the following error
> 
> Error in options(error = "browser") : invalid value for 'error'
> 
> 
> 
> Any help would be greatly appreciated. 
> 
> Kind regards
> Andrew
> 
> On Thu, Oct 8, 2015 at 10:33 AM, David Winsemius <dwinsemius at comcast.net> wrote:
> 
> On Oct 7, 2015, at 6:10 PM, andrew haywood wrote:
> 
> > Thanks David,
> >
> > I apologies for not posting the versions.
> >
> > I am running
> >
> > R version 3.2.2 (2015-08-14)
> > Platform: x86_64-w64-mingw32/x64 (64-bit)
> > Running under: Windows 7 x64 (build 7601) Service Pack 1
> >
> > locale:
> > [1] LC_COLLATE=English_United Kingdom.1252
> > [2] LC_CTYPE=English_United Kingdom.1252
> > [3] LC_MONETARY=English_United Kingdom.1252
> > [4] LC_NUMERIC=C
> > [5] LC_TIME=English_United Kingdom.1252
> >
> > attached base packages:
> > [1] stats     graphics  grDevices utils     datasets  methods   base
> >
> > other attached packages:
> > [1] segmented_0.5-1.2
> >
> > And I still get the error. What is the best way to debug the error?
> 
> The first thing I do is run traceback() immediately after the error. If that fails to illuminate the problem, my next step is falling back to:
> 
> options(error="browser")
> # which should allow you to examine the system-state at the time of the error.
> 
> And at that point I start considering sending an email to the maintainer with my reproducible example, especially so since it fails with a more recent version. It may be that the maintainer has the same OS as you have.
> 
> --
> David.
> >
> > Kind regards teht
> > Andrew
> >
> >
> > On Thu, Oct 8, 2015 at 7:11 AM, David Winsemius <dwinsemius at comcast.net> wrote:
> >
> > On Oct 7, 2015, at 6:50 AM, andrew haywood wrote:
> >
> > > Dear List,
> > >
> > > I am trying to run a simple pieewise regression using the segmented package.
> > >
> > > When running the following code
> > >
> > > library(segmented)
> > > data = data.frame(x=c(50,60,70,80,90,100,110) , y=
> > > c(703.786,705.857,708.153,711.056,709.257, 707.4, 705.6))
> > >
> > > model.lm = segmented(lm(y~x,data = data),seg.Z = ~x, psi = NA, control =
> > > seg.control(K=1))
> > >
> > > I get the following error.
> > >
> > > Error in if (psi == Inf) psi <- median(XREGseg) :
> > >  missing value where TRUE/FALSE needed
> >
> > I don't get any error, despite being a bit behind the times. You need to specify the versions (OS, R, segmented) and prepare for some debugging efforts. Easiest way to do this is with the output of sessionInfo().
> >
> > R version 3.2.1 (2015-06-18) -- "World-Famous Astronaut"
> > Copyright (C) 2015 The R Foundation for Statistical Computing
> > Platform: x86_64-apple-darwin10.8.0 (64-bit)
> >
> > I also have an embarrassing number of packages loaded.
> >
> > other attached packages:
> >  [1] segmented_0.5-1.1   boot_1.3-17         sqldf_0.4-10
> >
> > (remaining 48 are omitted)
> >
> >
> > >       [[alternative HTML version deleted]]
> > >
> > > ______________________________________________
> > > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > > 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.
> >
> > David Winsemius
> > Alameda, CA, USA
> >
> >
> 
> David Winsemius
> Alameda, CA, USA
> 
> 

David Winsemius
Alameda, CA, USA