System76 has a facelift

System76, an excellent Linux computer hardware vendor, got a cool new web site. I like it!

R is now the #12 most popular programming language

According to the most recent TIOBE index, R is the #12 most popular programming language.

spread doesn't work with dplyr::grouped_df

This bug caused several hours of my time. Hope it can get fixed soon. Meanwhile adding an extra step by changing it to a data.frame works fine.

pander 0.5.0: the next generation of markdown tables in R

I am moving from Sweave to Rmarkdown, this looks very promising.

translate2R

Cool utility, for those who stuck with SPSS.

Teaching statistics using R: Resources

I am compiling a list of resources on teaching statistics using R, many of which target undergraduates:

1. Swirl
2. Mosaic
3. Tigerstats
4. ...

Teaching statistics using R

This post explains it well. I also like the "mosaic" package.

Zelig 5, 4, and 3

Zelig is one of the R packages that I use routinely. The most recent version is Zelig 5, which uses the new "reference class" OOP model, looks promising. But it does not support all the models the earlier versions supported yet and the output cannot be readily processed by the table-making packages, such as xtable, stargazer, and texreg. Zelig 4 has been around for some time but it seems to be more error prone than Zelig 3, which is still my Zelig version of choice for data analysis.

Statistics doesn't have to be so hard: simulate!

I ought to show this video to my students.