search for: anorex

...d with the following code. I do not know if it is a bug, but there are inconsistencies in the behaviour in the GLM package when both an offset and multiplicative effects are present. In this situation offset should be specified directly and not in the model. See example below. library(MASS) data(anorexia) ## End Don't run # These two will give exactly the same result in the summary anorex.1 <- glm(Postwt ~ Prewt + Treat + offset(Prewt), family = gaussian, data = anorexia) anorex.1a <- glm(Postwt ~ Prewt + Treat , offset = Prewt, family = gaussian, d...

Dear all, I am fitting a GLM similar to library(MASS) anorex.1 <- glm(Treat~Postwt+Prewt,family = binomial, data = anorexia) I have found two ways of computing the p-value of the fitted model: pval1 <- 1-pchisq(anorex.1$deviance,anorex.1$df.residual) pval2 <- 1-pchisq(anorex.1$null.deviance - anorex.1$deviance, anorex.1$df.null -...

...d Multimodel Inference: a Practical Information-Theoretic Approach, 2nd edn., Springer-Verlag, New York. 353 pp } \author{ Patrick Giraudoux and David Pleydell: pgiraudo at univ-fcomte.fr, dpleydel at univ-fcomte.fr } \seealso{ \code{\link{AIC}},\code{\link{logLik}} } \examples{ library(MASS) anorex.1 <- lm(Postwt ~ Prewt*Treat, data = anorexia) selMod(anorex.1) anorex.2 <- glm(Postwt ~ Prewt*Treat, family=gaussian,data = anorexia) selMod(anorex.2) anorex.3<-lm(Postwt ~ Prewt+Treat, data = anorexia) selMod(list(anorex.1,anorex.2,anorex.3)) } \keyword{ models }

A querent on StackOverflow asked about the with() function http://stackoverflow.com/questions/42283479/why-when-to-use-with-function#42283479 and asked about the example in ?with library(MASS) with(anorexia, { anorex.1 <- glm(Postwt ~ Prewt + Treat + offset(Prewt), family = gaussian) summary(anorex.1) }) which saves little or no typing relative to anorex.1 <- glm(Postwt ~ Prewt + Treat + offset(Prewt), family = gauss...

...ello, I'm a starting user of R. I have installed R 1.9.1 and winedt 5.4 If I run the example from written with winedt. The summary command does not produce any output. It does when I repeat the command manualy in R. Can someone explain me what can be the problem? library(MASS) data(anorexia) anorex.1 <- glm(Postwt ~ Prewt + Treat + offset(Prewt), family = gaussian, data = anorexia) summary(anorex.1) Regards De Herdt J

...Test > ### Title: Permutation test for lm, lme and glm (binomial and Poisson) > ### objects > ### Aliases: PermTest PermTest.lm PermTest.lme PermTest.glm print.PermTest > ### Keywords: htest > > ### ** Examples > > library(MASS) > mylm<-lm(Postwt~Prewt,data=anorexia) > PermTest(mylm,B=250) Error: could not find function "PermTest" Execution halted If I run R CMD check --no-examples pgirmess, everything comes OK. Seems again that this check makes problem. I googled a bit on R-devel but did not find any understandable post on that... Any ide...

Dear all, After running a glm, I use the summary ( ) function to extract its coefficients and related statistics for further use. Unfortunately, the screen only displays a small (last) part of the results. I tried to overcome the problem by creating/saving an object "coef" for coefficients of the model and export/save it e.g. as a cvs document. While I succed with this operatiion, I do

R-1.7.0 built on NetBSD 1.6, but the validation test suite failed: Machinetype: Intel Pentium III (600 MHz); NetBSD 1.6 (GENERIC) Remote gcc version: gcc (GCC) 3.2.2 Remote g++ version: g++ (GCC) 3.2.2 Configure environment: CC=gcc CXX=g++ LDFLAGS=-Wl,-rpath,/usr/local/lib make[5]: Entering directory `/local/build/R-1.7.0/src/library' >>> Building/Updating

In a Rails controller I set the scope on a model class in an around filter. I have defined expectations on the model classes, and ideally, I would add a further expectation for the scope. Is this already possible in some way? How would I go about adding support a scope expectation? Michael -- Michael Schuerig mailto:michael at schuerig.de http://www.schuerig.de/michael/