CODEWITHSUNDEEP
r
stevec
stevec

Reputation: 52208

List of all functions in all packages on CRAN?

A list of all R packages on CRAN can be found here.

Is there a quick and easy way to get all the function names within all of those packages?

Upvotes: 2

Views: 310

Answers (2)

stevec
stevec

Reputation: 52208

library(collidr)

# This data.frame is ~300k rows, here are the first 10

collidr::CRANdf[1:10, ]

# package_names     function_names
# 1             A3         A3-package
# 2             A3                 a3
# 3             A3            a3.base
# 4             A3     a3.gen.default
# 5             A3              a3.lm
# 6             A3              a3.r2
# 7             A3            housing
# 8             A3 multifunctionality
# 9             A3            plot.A3
# 10            A3    plotPredictions
...

Upvotes: 1

Ronak Shah
Ronak Shah

Reputation: 388797

You can use lsf.str function to get all the functions in a package

lsf.str("package:lubridate")

#%--% : function (start, end)  
#%m-% : Formal class 'standardGeneric' [package "methods"] with 8 slots
#%m+% : Formal class 'standardGeneric' [package "methods"] with 8 slots
#%within% : Formal class 'standardGeneric' [package "methods"] with 8 slots
#add_with_rollback : function (e1, e2, roll_to_first = FALSE, preserve_hms = TRUE) 
#....

Moreover, you can get all the packages using available.packages function. 

df <- available.packages()

This returns a matrix which has a column name "Package" which you can use programmatically to get all the function names. 

sapply(df[, 1], function(x) lsf.str(paste0("package:", x)))

but this I think would require you to have all the packages downloaded on your system. It works at least for

sapply(c("lubridate", "dplyr"), function(x) lsf.str(paste0("package:", x)))

Upvotes: 1

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