
The gtools R package provides functions to assist in R programming, including:
- assist in developing, updating, and maintaining R and R packages (
ask, checkRVersion, getDependencies, keywords, scat), 
- calculate the logit and inverse logit transformations (
logit, inv.logit), 
- test if a value is missing, empty or contains only NA and NULL values (
invalid), 
- manipulate R’s .Last function (
addLast), 
- define macros (
defmacro), 
- detect odd and even integers (
odd, even), 
- convert strings containing non-ASCII characters (like single quotes) to plain ASCII (
ASCIIfy), 
- perform a binary search (
binsearch), 
- sort strings containing both numeric and character components (
mixedsort), 
- create a factor variable from the quantiles of a continuous variable (
quantcut), 
- enumerate permutations and combinations (
combinations, permutation), 
- calculate and convert between fold-change and log-ratio (
foldchange, logratio2foldchange, foldchange2logratio), 
- calculate probabilities and generate random numbers from Dirichlet distributions (
rdirichlet, ddirichlet), 
- apply a function over adjacent subsets of a vector (
running), 
- modify the TCP_NODELAY (
de-Nagle) flag for socket objects, 
- efficient 
rbind of data frames, even if the column names dont match (smartbind`), 
- generate significance stars from p-values (
stars.pval), 
- convert characters to/from ASCII codes (
asc, chr), 
- convert character vector to ASCII representation (
ASCIIfy). 
- apply title capitalization rules to a character vector (
capwords) 
Installation
You can install the released version of gtools from CRAN with:
install.packages("gtools")
 
And the development version from GitHub with:
# install.packages("devtools")
devtools::install_github("r-gregmisc/gtools")