browse_cran: Search for CRAN packages by keyword/regex

In DesiQuintans/librarian: Install, Update, Load Packages from CRAN, 'GitHub', and 'Bioconductor' in One Step

Description

Inspired by my mysterious inability to remember what the RColorBrewer package is actually called. Lets you find relevant CRAN packages right from your terminal.

Usage

browse_cran(query, fuzzy = FALSE, echo = TRUE, ignore.case = TRUE)

Arguments

query	(Character) A string to grep() for.
fuzzy	(Logical) If TRUE, enables fuzzy orderless matching. Every word in query (i.e. every group of characters separated with a space) will be wrapped with a lookaround (?=*KEYWORD). This will match keywords regardless of the order in which those words appear.
echo	(Logical) If TRUE, print the results to the console.
ignore.case	(Logical) If TRUE, ignore upper/lowercase differences while searching.

Details

When browse_cran() is run for the first time in a new session, it will take about 6-12 seconds to download and cache CRAN data. This only happens once per session; subsequent calls will use the cached copy.

Value

Invisibly returns a dataframe of the packages that matched the query together with their descriptions. Prints results to the console.

Examples

browse_cran("colorbrewer")  # Search by keyword

#> RColorBrewer 
#>     Provides color schemes for maps (and other graphics) designed by Cynthia 
#>     Brewer as described at http://colorbrewer2.org 
#> 
#> Redmonder 
#>     Provide color schemes for maps (and other graphics) based on the color 
#>     palettes of several Microsoft(r) products.


browse_cran("zero-inflat.*?(abund|count)")  # Search by regular expression

#> hurdlr 
#>     When considering count data, it is often the case that many more zero 
#>     counts than would be expected of some given distribution are observed.

# And five other matches...


browse_cran("network twitter api", fuzzy = TRUE)  # Order-agnostic (fuzzy) search

#> RKlout 
#>     An interface of R to Klout API v2.

DesiQuintans/librarian documentation built on July 16, 2021, 2:25 a.m.