RSiteSearch {utils}R Documentation

Search for Key Words or Phrases in Documentation

Description

Search for key words or phrases in various documentation, such as R manuals, help pages of base and CRAN packages, vignettes, task views and others, using the search engine at https://search.r-project.org and view them in a web browser.

Usage

RSiteSearch(string,
            restrict = c("functions", "descriptions", "news", "Rfunctions",
                         "Rmanuals", "READMEs", "views", "vignettes"),
            format,
            sortby = c("score", "date:late", "date:early", "subject",
                       "subject:descending", "size", "size:descending"),
            matchesPerPage = 20,
            words = c("all", "any"))

Arguments

string

A character string specifying word(s) or phrase(s) to search. If the words are to be searched as one entity, enclose them either in (escaped) quotes or in braces.

restrict

A character vector, typically of length greater than one. Values can be abbreviated. Possible areas to search in: functions for help pages of CRAN packages, descriptions for extended descriptions of CRAN packages, news for package NEWS, Rfunctions for help pages of R base packages, Rmanuals for R manuals, READMEs for ‘README’ files of CRAN packages, views for task views, vignettes for package vignettes.

format

deprecated.

sortby

character string (can be abbreviated) indicating how to sort the search results:
(score, date:late for sorting by date with latest results first, date:early for earliest first, subject for captions in alphabetical order, subject:descending for reverse alphabetical order, size or size:descending for size.)

matchesPerPage

How many items to show per page.

words

Show results matching all words/phrases (default) or any of them.

Details

This function is designed to work with the search site at https://search.r-project.org.

Unique partial matches will work for all arguments. Each new browser window will stay open unless you close it.

Value

(Invisibly) the complete URL passed to the browser, including the query string.

Author(s)

Andy Liaw and Jonathan Baron and Gennadiy Starostin

See Also

help.search, help.start for local searches.

browseURL for how the help file is displayed.

Examples

# need Internet connection
## for phrase searching you may use (escaped) double quotes or brackets
RSiteSearch("{logistic regression} \"glm object\"")
RSiteSearch('"logistic regression"')

## Search in vignettes and help files of R base packages
## store the query string:
fullquery <- RSiteSearch("lattice", restrict = c("vignettes","Rfunctions"))
fullquery # a string of 112 characters
[Package utils version 4.4.0 Index]