These are associated with the Fundref API
Since these Crossref options use dashes in the names in the API, we provide a crosswalk to these so that you can use underscores wherever they use dashes. Also, filters that have dots in them are undscores instead, so license.url becomes license_url. Additionally, using colons is not very R like, so if Crossref requires has-funder:true, just do has-funder=TRUE in R. Pass these options in to the cr_*() functions in the filter parameter as a list, e.g., filter=list(has_funder=TRUE, has_full_text=TRUE)
Filters allow you to narrow queries. All filter results are lists. The following filters are supported:
| filter | possible values | description |
|---|---|---|
has_funder |
{logical} |
metadata which includes one or more funder entry |
funder |
{funder_id} |
metadata which include the {funder_id} in FundRef data |
prefix |
{owner_prefix} |
metadata belonging to a DOI owner prefix {owner_prefix} (e.g. 10.1016 ) |
member |
{member_id} |
metadata belonging to a CrossRef member |
from_index_date |
{date} |
metadata indexed since (inclusive) {date} |
until_index_date |
{date} |
metadata indexed before (inclusive) {date} |
from_deposit_date |
{date} |
metadata last (re)deposited since (inclusive) {date} |
until_deposit_date |
{date} |
metadata last (re)deposited before (inclusive) {date} |
from_update_date |
{date} |
Metadata updated since (inclusive) {date}. Currently the same as from_deposit_date. |
until_update_date |
{date} |
Metadata updated before (inclusive) {date}. Currently the same as until_deposit_date. |
from_first_deposit_date |
{date} |
metadata first deposited since (inclusive) {date} 1 |
until_first_deposit_date |
{date} |
metadata first deposited before (inclusive) {date} 2 |
from_pub_date |
{date} |
metadata where published date is since (inclusive) {date} |
until_pub_date |
{date} |
metadata where published date is before (inclusive) {date} |
has_license |
{logical} |
metadata that includes any <license_ref> elements. |
license_url |
{url} |
metadata where <license_ref> value equals {url} |
license_version |
{string} |
metadata where the <license_ref>’s applies_to attribute is {string} |
license_delay |
{integer} |
metadata where difference between publication date and the <license_ref>’s start_date attribute is <= {integer} (in days) |
has_full_text |
{logical} |
metadata that includes any full text <resource> elements. |
full_text_version |
{string} |
metadata where <resource> element’s content_version attribute is {string}. |
full_text_type |
{mime_type} |
metadata where <resource> element’s content_type attribute is {mime_type} (e.g. application/pdf). |
public_references |
metadata where publishers allow references to be distributed publicly. 3 | |
has_references |
{logical} |
metadata for works that have a list of references |
has_archive |
{logical} |
metadata which include name of archive partner |
archive |
{string} |
metadata which where value of archive partner is {string} |
has_orcid |
{logical} |
metadata which includes one or more ORCIDs |
orcid |
{orcid} |
metadata where <orcid> element’s value = {orcid} |
issn |
{issn} |
metadata where record has an ISSN = {issn}. Format is xxxx-xxxx. |
type |
{type} |
metadata records whose type = {type}. Type must be an ID value from the list of types returned by the /types resource |
directory |
{directory} |
metadata records whose article or serial are mentioned in the given {directory}. Currently the only supported value is doaj. |
doi |
{doi} |
metadata describing the DOI {doi} |
updates |
{doi} |
metadata for records that represent editorial updates to the DOI {doi} |
is_update |
{logical} |
metadata for records that represent editorial updates |
has_update_policy |
{logical} |
metadata for records that include a link to an editorial update policy |
container_title |
metadata for records with a publication title exactly with an exact match | |
publisher_name |
metadata for records with an exact matching publisher name | |
category_name |
metadata for records with an exact matching category label | |
type_name |
metadata for records with an exactly matching type label | |
award_number |
{award_number} |
metadata for records with a matching award number. Optionally combine with award_funder |
award_funder |
{funder doi or id} |
metadata for records with an award with matching funder. Optionally combine with award_number |
from_created_date |
{date} |
metadata first deposited since (inclusive) {date} |
until_created_date |
{date} |
metadata first deposited before (inclusive) {date} |
affiliation |
metadata for records with at least one contributor with the given affiliation | |
has_affiliation |
metadata for records that have any affiliation information | |
article_number |
metadata for records with a given article number | |
alternative_id |
metadata for records with the given alternative ID, which may be a publisher_specific ID, or any other identifier a publisher may have provided | |
assertion_group |
metadata for records with an assertion in a particular group | |
assertion |
metadata for records with a particular named assertion |