R data.table join with inequality conditions

Question

I would like to subset my data based on multiple inequality conditions using the data.table package. The examples in the data.table manual show how to do this with character va

Answer 1

The solution is quite fast and straightforward using the package dplyr.

install.packages(dplyr)
library(dplyr)

newdata <- filter(data, X > 0 , Y > 0 , Z > 0)

dplyr is showing to be one of the easiest and fastest packages for managing data frames. Check this great tutorial here: http://cran.rstudio.com/web/packages/dplyr/vignettes/introduction.html

The RStudio team have alsoe produced a nice Cheat Sheet, here: http://www.rstudio.com/resources/cheatsheets/