While vector-friendly, R's paste function has a few behaviors I don't particularly like.
One is using a space as the default separator:
> adjectives> paste(adjectives,"er")
> paste(adjectives,"er")
"lean er" "fast er" "strong er" #d'oh
> paste(adjectives,"er",sep="")
"leaner" "faster" "stronger"
Empty vectors get an undeserved first class treatment:
> paste(indelPositions,"i",sep="")
"i"
> indelPositions> paste(indelPositions,"i",sep="")
"5i"...
As scheduled, the first release of the new R 2.14 series is now available for download in source code form. As of this writing, pre-compiled binaries for Windows, Linux and MacOS aren't yet available, but will appear on your local CRAN mirror in the next couple of days. One of the biggest changes in 2.14 is the introduction of...
Simulation: Efficiency of mean with median Goal: Show the efficiency of the mean when compared with the median using a large simulation where both estimators are applied on a sample of U(0,1) uniformly distributed random numbers. Input: # Goal: Show...
Don't forget that midnight tonight (Pacific Daylight Time) is the deadline to submit your draft entry for the Applications of R in Business Contest, with $20,000 in prizes up for grabs from Revolution Analytics. You'll still be able to edit your entry during the public review period (until November 30), but no new entries will be accepted for the...
I swear there was a point in writing an introduction to covariance structures: now we can start joining all sort of analyses using very similar notation. In a previous post I described simple (even simplistic) models for a single response … Continue reading →
In a previous entry, as well as section 2.4.3 of the book, we describe how to carry out a 2 group permutation test in SAS as well as with the coin package in R. We demonstrate with comparing the ages of the female and male subjects in the HELP study.I...
The new R 2.14.0 is out! Get the source code from here. Take a look at these posts for some miscellaneous advices to make the upgrade easier. Also this thread on stackoverflow and this post contributed by Tal Galili&nbs...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
