help - hoslem.test
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
__________________________________________________ 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 > >
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