similar to: 'anova.gls' in 'nlme' (PR#13567)

Hi all, I'm trying to figure out the example about mixed models in the Pinheiro and Bates book (Mixed-Effects Models in S and S-Plus, 2000, pp. 135-137). One thing I don't understand is: When I run the command fm1Orth.lm <- lm( distance ~ age, Orthodont ) followed by fm2Orth.lm <- update( fm1Orth.lm, formula = distance ~ Sex*age ) and then do summary(fm2Orth.lm)

Dear all, I have tried to modify the code of MASS:::stepAIC.default(), dropterm() and addterm() to use AICc instead of AIC for model selection. The code is appended below. Somehow the calculations are still not correct and I would be grateful if anyone could have a look at what might be wrong with this code... Here is a working example: ## require(nlme) model1=lme(distance ~ age + Sex, data =

I wonder if you are perhaps trying to solve the wrong problem. If you like what the older version of the aod package does, but not the current version, then I think the solution is to propose an option to the aod maintainer that would restore your preferred algorithm into the current version, and then use the current R. A less good, but possibly workable, option is to compile the old version of

Don't choose a mirror. That will override the repos choice. Do update R to a current version if you aren't able to debug this yourself. Duncan Murdoch On 08/10/2020 12:38 p.m., Steven Yen wrote: > Sorry Gentlemen and all. Now this is becoming a joke (to me). I repeated > what I did earlier, with and without the option to set repos suggested > by Duncan. Now it does not work.

All support on this list is voluntary, and support for old versions of R is not even necessarily on-topic here which is why you keep getting nudged to upgrade. Your "need" for support for an old version is definitely not "our" problem, so I suggest you start looking for a consultant if this issue is that important to you. Such is the nature of volunteer-developed open source

Okay, so it's not an RStudio issue. However, I'd guess setting options(repos = "https://cran-archive.r-project.org") at the start of your session could make everything work. (I'm guessing you currently have it set to "http://cran.rstudio.com", which is the source of the last warning below, probably due to an R bug. But since you're using an obsolete

Hello R Users, I have two data sets i) TOMS aerosol optical depth(AOD) and ii) TOMS ozone(O3). AOD data is on 1x1 grid and O3 data is on 5x5 grid. First I want to read AOD and O3 as it is and then I want to regrid AOD on 5x5 grid as O3. Reading is first problem. FIRST PROBLEM READING AOD: AOD data is in following format: ######### Latitute: 89.5 167 0 0 0 0 0 182 0 0 0 0 0 0 0 0 0 0 0 0 200

Sorry Gentlemen and all. Now this is becoming a joke (to me). I repeated what I did earlier, with and without the option to set repos suggested by Duncan. Now it does not work. I wonder whether it is dependent on the mirror I chose, but I do not remember the one I chose earlier when it work. I need your help, gentlemen, as I need to use R-3.0.3 for my task. >

Hello R Users, I am new to R. I have two data sets i) TOMS aerosol optical depth(AOD) and ii) TOMS ozone(O3). > > AOD data is on 1x1 grid and O3 data is on 5x5 grid. > > First I want to read AOD and O3 as it is and then I want to regrid AOD on > 5x5 grid as O3. > > Reading is first problem. > > FIRST PROBLEM READING AOD: > > AOD data is in following format: >

Thanks. You gentlemen please tell me what this means. In R (outside of RStudio) I ran: install.packages("aod") Received a warning (and installation did not seem to go through). Then I tried install.packages("aod",repos='https://cran-archive.r-project.org') Received a warning but it went on to try

Thanks for the help. I have a reason to continue with R-3.0.3. I used maxLik to estimate econometric models and some of them are better handled with R-3.0.3 (but not later)----a sad reality I do not like. Here is what I did. I downloaded https://cran-archive.r-project.org/bin/windows/contrib/3.0/aod_1.3.zip and installed the zip file, which worked in both RStudio and R (without RStudio). In

Drop the RStudio repos. Best, Uwe Ligges On 05.10.2020 11:10, Steven Yen wrote: > Thanks. I did as suggested but still received a warning, though the > installation went through. Anything I could do to install without the > warning message. > > What is the contrib.url argument? > > > install.packages("aod",repos='https://cran-archive.r-project.org')

Then you'd rather need install.packages("aod",repos='https://cran-archive.r-project.org') or use the contrib.url argument. Best, Uwe Ligges On 05.10.2020 10:47, Steven Yen wrote: > Thanks for the help. I do update to the latest R-4.0.2. As I said, for > reasons that's hard to explain, some of my tasks are better handled with > an older version of R, in

Just remembered: RStudio runs its own wrapper around install.packages(). Steven, you should try doing the install from outside of RStudio, and see if it makes a difference. Duncan Murdoch On 08/10/2020 9:59 a.m., Duncan Murdoch wrote: > He didn't specify the RStudio repos, though it's probably implicitly > specified in getOption("repos"). I wonder why

Thanks. I did as suggested but still received a warning, though the installation went through. Anything I could do to install without the warning message. What is the contrib.url argument? > install.packages("aod",repos='https://cran-archive.r-project.org') Warning in install.packages : ? unable to access index for repository

He didn't specify the RStudio repos, though it's probably implicitly specified in getOption("repos"). I wonder why install.packages() is looking there, when repos is given explicitly? On 08/10/2020 8:54 a.m., Uwe Ligges wrote: > Drop the RStudio repos. > > Best, > Uwe Ligges > > On 05.10.2020 11:10, Steven Yen wrote: >> Thanks. I did as suggested but

Thanks for the help. I do update to the latest R-4.0.2. As I said, for reasons that's hard to explain, some of my tasks are better handled with an older version of R, in this case R-3.0.3. Please just help me install packages successfully with this older version of R. I ran the following line but obviously was not getting it across. ===== >

From ../ReadMe in the mentioned web resource: "Packages for R >= 1.7.0 and R < 3.2.0 are available from https://cran-archive.r-project.org/bin/windows/contrib/" We do not hold binaries of several year old versions of R on CRAN. Note that R 3.0.0 is 7 years old. You shoudl realy consider to update to 4.0.2. Best, Uwe Ligges On 05.10.2020 09:56, Steven Yen wrote: > I had

I had to install/use an older version of (R-3.0.3) for a reason. While installing a package from CRAN (either in RStudio or R), I received the following warning message saying unable to access index for repository http://cran.rstudio.com/bin/windows/contrib/3.0. See message below. In this case, I tried to install "aod". The install nevertheless went through, as confirmed by the

Hmm. You raised an interesting point. Actually I am not having problems with aod per se?-it is just a supporting package I need while using old R. The essential package I need, maxLik, simply works better under R-3.0.3, for reason I do not understand?specifically the numerical gradients of the likelihood function are not evaluated as accurately in newer versions of R in my experience, which is why