Example, I know many popular functions, to name one like tbl_df(). I usually do not remember which package it belongs to i.e. data.table or dplyr. So I have to always remember and load a package and I can not do ?tbl_df unless I have loaded the correct package.
Is there a way to know to which package a particular function belongs to, prior to loading or installing of the package in R console itself.
Any help is highly appreciated. Thanks.
sos package can help! Try:
install.packages("sos")
library(sos)
findFn("str_replace")
Try this as well
lsp <- function(package, all.names = FALSE, pattern)
{ package <- deparse(substitute(package)) ls( pos = paste("package", package, sep = ":"),
all.names = all.names, pattern = pattern ) }
after running this function, if you want to search for str_replace function in stringr package- lsp(stringr, pattern="*replace")
Inspired by @J_F who suggested ??tbl_df: I was looking for 'arima' and had dozens if not hundreds of hits; I narrowed them down using
help.search('arima', fields=c('name'), ignore.case=FALSE, agrep=FALSE)
(most importantly, agrep=FALSE turns off fuzzy matching)
