By John Mount
This is particularly useful in selecting columns from
library("wrapr") # get qc() definition head(mtcars[, qc(mpg, cyl, wt)]) # mpg cyl wt # Mazda RX4 21.0 6 2.620 # Mazda RX4 Wag 21.0 6 2.875 # Datsun 710 22.8 4 2.320 # Hornet 4 Drive 21.4 6 3.215 # Hornet Sportabout 18.7 8 3.440 # Valiant 18.1 6 3.460
Or even to install many packages at once:
install.packages(qc(vtreat, cdata, WVPlots)) # shorter than the alternative: # install.packages(c("vtreat", "cdata", "WVPlots"))
To leave a comment for the author, please follow the link and comment on their blog: R – Win-Vector Blog.
R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) statistics (regression, PCA, time series, trading) and more…
Source:: R News