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hi there, I have a list of 5 identical dataframes: mydf <- data.frame(x=c(1:5), y=c(21:25)) mylist <- rep(list(mydf),5) and a factor variable with 5 levels: foo <- c(letters[1:5]) foo <- as...

Hello there, I have a linear regression model for which I estimated heteroskedasticity-robust (Huber-White) standard errors using the coeftest function in the lmtest-package. Now I would like to inspect the predicted values of the dependent variable for...

Hi there, this is probably simple but I can't seem to figure it out by myself... I have two dataframes (df.1 and df.2): df.1 <- data.frame(year=factor(rep(1:3,3)), level=rep(letters[1...

Hello! I'm thinking of applying a censored regression model to cross-sectional data, using either the tobit (package survival) or the censReg function (package censReg). The dependent variable is left and right-censored. My hopefully not too silly question...

Hello again, many thanks for your help! after upgrading the lattice package to the latest version, your solution works perfectly. Deepayan Sarkar wrote: > On Fri, Jan 28, 2011 at 5:21 PM, E Hofstadler <e.hofstadler at gmail.com> wrote...

Thanks for your response! Terry Therneau wrote: > I assume you mean "survreg" in the survival package. It's a shame > that censored gaussian regression has earned a unique label (tobit) that > makes people think it is something so very different...

Hello all, This question concerns the function Dotplot from the Hmisc package. My aim is to compare values between groups in each panel of the Dotplot, with the values of different groups clearly distinguishable by different symbols. All lines and...

Great, many thanks to Scott and Petr! 2011/4/27 Petr PIKAL <petr.pikal at precheza.cz>: > Hi > > > r-help-bounces at r-project.org napsal dne 27.04.2011 13:30:13: > >> Hi there, >> >> this is probably simple but...

Dear all, Being a newbie to R, I've trawled through many old posts on this list looking for a solution to my problem, but unfortunately couldn't quite figure it out myself. I'd be very grateful if someone...

hello, the following questions will without doubt reveal some fundamental ignorance, but hopefully you can still help me out. I'd like to bootstrap a coefficient gained on the basis of the coefficients in a logistic regression model (the mean...

Dear list, My question to follow is not a pure R question but contains also a more general statistical/econometrical part, but I was hoping that perhaps someone knowledgable on this list could offer some help. I have estimated a...

Thanks Nick and Juan for your replies. Nick, thanks for pointing out the warning in subset(). I'm not sure though I understand the example you provided -- because despite using subset() rather than bracket notation, the original function (myfunct) does...

2011/4/1 Nick Sabbe <nick.sabbe at ugent.be>: > This should be a version that does what you want. Indeed it does, thank you very much! > Because you named the variable lvarname, I assumed you were already passing > "lvar...

Hi there, Could someone help me with the following programming problem..? I have written a function that works for my intended purpose, but it is quite closely tied to a particular dataframe and the names of the variables in this...

Hello Deepayan, many thanks for your reply and help. Does this solution with "ylab.right" require a newer version of lattice (somewhere in the archives I noted "ylab.right" being mentioned in the context of a development version of lattice...