Re: [R] R-help Digest, Vol 160, Issue 8

I am having trouble running aplpack on my Mac. It will run on my PC, but the Mac gives an error message. Below is the result that I obtained. It seems to install fine--see below--but I can't load the library. > install.packages("aplpack") trying URL 'http://cran.rstudio.com/bin/macosx/contri

[R] Problem loading aplpack library

I am having trouble running aplpack on my Mac. It will run on my PC, but the Mac gives an error message. Below is the result that I obtained. It seems to install fine--see below--but I can't load the library. > install.packages("aplpack") trying URL 'http://cran.rstudio.com/bin/macosx/contr

[R] Understanding linear contrasts in Anova using R

#I am trying to understand how R fits models for contrasts in a #simple one-way anova. This is an example, I am not stupid enough to want #to simultaneously apply all of these contrasts to real data. With a few #exceptions, the tests that I would compute by hand (or by other software) #will give

[R] extracting information from an object

I was working on a project involving a linear model, and wanted to extract the standard error of a predictor. I am able to do so, but not in the way I would expect. I would have expected that if a created a model such as Model1 <- lm(y~x,z,d), the object Model1 would contain that information e