I must correct myself,
attach does not prevent from modifying the object but can be confusing see
?attach example
> x<-1:5
> y<-NA
> xx<-data.frame(x,y)
> attach(xx)
The following objects are masked _by_ .GlobalEnv:
x, y
> rm(x,y)
> x
[1] 1 2 3 4 5> yy<-x>3
> xx<-cbind(xx,yy)
> xx
x y yy
1 1 NA FALSE
2 2 NA FALSE
3 3 NA FALSE
4 4 NA TRUE
5 5 NA TRUE> x
[1] 1 2 3 4 5> x<-x*rnorm(5)
> x
[1] -0.1621579 -0.0142278 -0.6453297 -4.4597072
-1.9681243> xx
x y yy
1 1 NA FALSE
2 2 NA FALSE
3 3 NA FALSE
4 4 NA TRUE
5 5 NA TRUE>
so new x variable is created and the x variable in xx data frame stays the same.
Cheers
Petr
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of PIKAL
> Petr
> Sent: Thursday, April 30, 2015 4:25 PM
> To: Luciane Maria Pilotto; r-help at r-project.org
> Subject: Re: [R] help - hoslem.test
>
> Hi
>
> I agree with John
>
> Just small refinements in lines
>
> > -----Original Message-----
> > > -----Original Message-----
> > > From: lutipilotto at yahoo.com.br
> > > Sent: Thu, 30 Apr 2015 04:24:32 -0700
> > > To: r-help at r-project.org, jrkrideau at inbox.com
> > > Subject: RE: [R] help - hoslem.test
> > >
> > > load("id3.rda")
> > And what is this?
> >
> > We do not have access to your office or computer hard disc.
> >
> > Please read http://stackoverflow.com/questions/5963269/how-to-make-a-
> > great-r-reproducible-example, see ?dput for sending data?
> >
> > It is very unlikely anyone here can help if we have no data.
> >
> >
> > > attach(id3)
>
> Do not use attach. It prevents from modifiyng id3.
>
> > >
> > > #transformando q13 em bin?ria
> > > q131<-ifelse(q13==1,1,ifelse(q13==2,2,ifelse(q13==3,2,
> > > ifelse(q13==4,2,ifelse(q13==5,2,NA)))))
>
> q131 <- as.numeric(cut(q13, c(0,1.5,5)))
>
> > x<-1:7
> > x
> [1] 1 2 3 4 5 6 7
> > as.numeric(cut(x, c(0,1.5,5)))
> [1] 1 2 2 2 2 NA NA
>
> > > id3<-cbind(id3,q131)
>
> rather dangerous in case id3 is not data.frame but matrix
>
> > > id3$q131 <- as.factor(id3$q131)
> > >
> > > tp1 <- glm(q131 ~ q11 + q10+q12+edcat + q08+q06+ q14, family
> > > binomial(link = "logit"), data=id3)
> > > tp1
> > >
> > > library(ResourceSelection)
> > > hoslem.test(tp1$q131, fitted(tp1), g=10)
>
> hoslem.test expects x to be a numeric vector of observations, binary
> (0/1).
> If I understand correctly tp1$q131 have values 1, 2 or NA.
>
> Cheers
> Petr
>
> > >
> > > dataframe: https://www.dropbox.com/s/9qrdf4mhd6tzypi/id3.rda?dl=0
> > >
> > >
> > > __________________________________________________
> > > Luciane Maria Pilotto
> > > Mestre e Doutoranda em Sa?de Bucal Coletiva - FO/UFRGS NDE
> > > Odontologia - UNIVATES
> > > Telefone: (51) 84512344
> > >
> > > --------------------------------------------
> > > Em qui, 30/4/15, John Kane <jrkrideau at inbox.com>
escreveu:
> > >
> > > Assunto: RE: [R] help - hoslem.test
> > > Para: "Luciane Maria Pilotto" <lutipilotto at
yahoo.com.br>,
> > > r-help at r-project.org
> > > Data: Quinta-feira, 30 de Abril de 2015, 7:52
> > >
> > >
http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-
> > reproducible-example
> > >
> > > John Kane
> > > Kingston ON Canada
> > >
> > >
> > > > -----Original Message-----
> > > > From: lutipilotto at yahoo.com.br
> > > > Sent: Wed, 29 Apr 2015 18:45:26 -0700 > To: r-help at
r-
> project.org
> > > > Subject: [R] help - hoslem.test > > Hello, >
> I'm working
> > > with ordinal logistic regression model (polr) and would like
> to
> > > test the proportional odds assumption.
> > > For this, I ran the binary
> > > > logistic
> > > regressions with varying cutpoints on the dependent variable,
as
> > > > described in the following commands. When running the test
of
> > > Hosmer and > Lemeshow (hoslem.test) for residuals gives
error.
> > > >
> > > > Thanks,
> > > > Luciane
> > > >
> > > >
> > > ______________________________________________
> > > > 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.
> > >
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> > reproducible code.
>
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Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny
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odes?latele. Obsah tohoto emailu i s p??lohami a jeho kopie vyma?te ze sv?ho
syst?mu.
Nejste-li zam??len?m adres?tem tohoto emailu, nejste opr?vn?ni tento email
jakkoliv u??vat, roz?i?ovat, kop?rovat ?i zve?ej?ovat.
Odes?latel e-mailu neodpov?d? za eventu?ln? ?kodu zp?sobenou modifikacemi ?i
zpo?d?n?m p?enosu e-mailu.
V p??pad?, ?e je tento e-mail sou??st? obchodn?ho jedn?n?:
- vyhrazuje si odes?latel pr?vo ukon?it kdykoliv jedn?n? o uzav?en? smlouvy, a
to z jak?hokoliv d?vodu i bez uveden? d?vodu.
- a obsahuje-li nab?dku, je adres?t opr?vn?n nab?dku bezodkladn? p?ijmout;
Odes?latel tohoto e-mailu (nab?dky) vylu?uje p?ijet? nab?dky ze strany p??jemce
s dodatkem ?i odchylkou.
- trv? odes?latel na tom, ?e p??slu?n? smlouva je uzav?ena teprve v?slovn?m
dosa?en?m shody na v?ech jej?ch n?le?itostech.
- odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za spole?nost
??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn? zmocn?n nebo p?semn?
pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto emailu p??padn?
osob?, kterou adres?t zastupuje, p?edlo?eny nebo jejich existence je adres?tovi
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Delete the contents of this e-mail with all attachments and its copies from your
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The sender of this e-mail shall not be liable for any possible damage caused by
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