Test scholarly identifier validity

Vectorized predicate that tests whether values are valid scholarly identifiers of a given supported type.

Validation is stricter than normalization. Values must conform to the canonical identifier syntax, and for identifier types with checksum algorithms (e.g., ORCID, ISBN, ISSN), checksum correctness is verified.

Inputs that are NA yield NA. Non-matching values return FALSE.

Use normalize_scholid() to convert structurally plausible identifiers to canonical form without performing checksum validation.

Usage

is_scholid(x, type)

Arguments

x

A vector of values to test.

type

A single string giving the identifier type. See scholid_types() for supported values.

Value

A logical vector of the same length as x, indicating whether each element is a valid identifier of the specified type.

See also

normalize_scholid(), scholid_types()

Examples

is_scholid("10.1000/182", "doi")
#> [1] TRUE
is_scholid("0000-0002-1825-0097", "orcid")
#> [1] TRUE