Extract scholarly identifiers from text — extract

Extract identifiers of a single supported type from free text.

The result is a list with one element per input element. Each element is a character vector of matches (possibly length 0). NA inputs yield an empty character vector.

Matches are returned as found in the text; use normalize_scholid() to convert identifiers to canonical form.

Usage

extract_scholid(text, type)

Arguments

text: A character vector of text.
type: A single string giving the identifier type. See scholid_types() for supported values.

Value

A list of character vectors of extracted identifiers.

Examples

extract_scholid("See https://doi.org/10.1000/182.", "doi")
#> [[1]]
#> [1] "10.1000/182."
#> 
extract_scholid("ORCID 0000-0002-1825-0097", "orcid")
#> [[1]]
#> [1] "0000-0002-1825-0097"
#>