R: Extract hosts

host_extract {urltools} | R Documentation

## Extract hosts

### Description

`host_extract` extracts the host from a vector of domain names. A host isn't the same as a domain - it could be the subdomain, if there are one or more subdomains. The host of `en.wikipedia.org` is `en`, while the host of `wikipedia.org` is `wikipedia`.

### Usage

    host_extract(domains)

### Arguments

`domains` | a vector of domains, retrieved through `url_parse` or `domain`.

### Value

a data.frame of two columns: `domain`, with the original domain names, and `host`, the identified host from the domain.

### Examples

    # With subdomains
    has_subdomain <- domain("https://en.wikipedia.org/wiki/Main_Page")
    host_extract(has_subdomain)

    # Without
    no_subdomain <- domain("https://ironholds.org/projects/r_shiny/")
    host_extract(no_subdomain)

[Package urltools version 1.7.3 Index]