def_references {rmacrostrat} | R Documentation |
A function to retrieve the definitions for one or more published scientific references in the Macrostrat database. By default, all reference definitions are returned.
def_references(ref_id = NULL)
ref_id |
|
A data.frame
containing the following columns:
ref_id
: The unique identification number(s) for the
reference(s).
pub_year
: The year of publication of the reference.
author
: The author(s) of the reference.
ref
: The name of the reference.
doi
: The digital object identifier of the reference.
url
: A URL where additional information, the source, or
contributing publication can be found.
t_units
: The total number of Macrostrat units associated with
the reference.
William Gearty
Bethany Allen
Macrostrat database metadata:
def_projects()
,
def_sources()
,
get_stats()
# Return all references
ex1 <- def_references()
# Return a subset of references
ex2 <- def_references(ref_id = c(1, 2, 3))