Note that EOL doesn't expose an API endpoint for directly querying for EOL taxon ID's, so we first use the function eol_search() to find pages that deal with the species of interest, then use eol_pages() to find the actual taxon IDs.

  ask = TRUE,
  messages = TRUE,
  rows = NA,
  rank = NULL,
  data_source = NULL,
  sciname = NULL,

as.eolid(x, check = TRUE)

# S3 method for eolid
as.eolid(x, check = TRUE)

# S3 method for character
as.eolid(x, check = TRUE)

# S3 method for list
as.eolid(x, check = TRUE)

# S3 method for numeric
as.eolid(x, check = TRUE)

# S3 method for data.frame
as.eolid(x, check = TRUE)

# S3 method for eolid, ...)

get_eolid_(sci_com, messages = TRUE, rows = NA, sciname = NULL, ...)



character; one or more scientific or common names. Or, a taxon_state object (see taxon-state)


logical; should get_eolid be run in interactive mode? If TRUE and more than one ID is found for the species, the user is asked for input. If FALSE NA is returned for multiple matches.


logical; If TRUE the actual taxon queried is printed on the console.


numeric; Any number from 1 to infinity. If the default NA, all rows are considered. Note that this function still only gives back a eolid class object with one to many identifiers. See get_eolid_() to get back all, or a subset, of the raw data that you are presented during the ask process.


(character) A taxonomic rank name. See rank_ref for possible options. Though note that some data sources use atypical ranks, so inspect the data itself for options. Optional. See Filtering below.


(character) A data source inside of EOL. These are longish names like e.g., "Barcode of Life Data Systems" or "USDA PLANTS images". Optional. See Filtering below.


Deprecated, see sci_com


Further args passed on to eol_search()


Input to as.eolid()


logical; Check if ID matches any existing on the DB, only used in as.eolid()


A vector of taxonomic identifiers as an S3 class. If a taxon is not found an NA is given. If more than one identifier is found the function asks for user input if ask = TRUE, otherwise returns NA. If ask=FALSE and rows does not equal NA, then a data.frame is given back, but not of the uid class, which you can't pass on to other functions as you normally can.

See get_id_details for further details including attributes and exceptions


EOL is a bit odd in that they have page IDs for each taxon, but then within that, they have taxon ids for various taxa within that page (e.g., GBIF and NCBI each have a taxon they refer to within the page [i.e., taxon]). And we need the taxon ids from a particular data provider (e.g, NCBI) to do other things, like get a higher classification tree. However, humans want the page id, not the taxon id. So, the id returned from this function is the taxon id, not the page id. You can get the page id for a taxon by using eol_search() and `eol_pages(), and the URI returned in the attributes for a taxon will lead you to the taxon page, and the ID in the URL is the page id.


The parameters rank and data_source are not used in the search to the data provider, but are used in filtering the data down to a subset that is closer to the target you want. For all these parameters, you can use regex strings since we use grep() internally to match. Filtering narrows down to the set that matches your query, and removes the rest.

See also


Scott Chamberlain


if (FALSE) { get_eolid(sci_com='Pinus contorta') get_eolid(sci_com='Puma concolor') get_eolid(c("Puma concolor", "Pinus contorta")) # specify rows to limit choices available get_eolid('Poa annua') get_eolid('Poa annua', rows=1) get_eolid('Poa annua', rows=2) get_eolid('Poa annua', rows=1:2) # When not found get_eolid(sci_com="uaudnadndj") get_eolid(c("Chironomus riparius", "uaudnadndj")) # filter results to a rank or data source, or both get_eolid("Satyrium") get_eolid("Satyrium", rank = "genus") get_eolid("Satyrium", data_source = "INAT") get_eolid("Satyrium", rank = "genus", data_source = "North Pacific Species List") # Convert a eolid without class information to a eolid class # already a eolid, returns the same as.eolid(get_eolid("Chironomus riparius")) # same as.eolid(get_eolid(c("Chironomus riparius","Pinus contorta"))) # numeric as.eolid(10247706) # numeric vector, length > 1 as.eolid(c(6985636,12188704,10247706)) # character as.eolid("6985636") # character vector, length > 1 as.eolid(c("6985636","12188704","10247706")) # list, either numeric or character as.eolid(list("6985636","12188704","10247706")) ## dont check, much faster as.eolid("6985636", check=FALSE) as.eolid(6985636, check=FALSE) as.eolid(c("6985636","12188704","10247706"), check=FALSE) as.eolid(list("6985636","12188704","10247706"), check=FALSE) (out <- as.eolid(c(6985636,12188704,10247706))) data.frame(out) as.eolid( data.frame(out) ) # Get all data back get_eolid_("Poa annua") get_eolid_("Poa annua", rows=2) get_eolid_("Poa annua", rows=1:2) get_eolid_(c("asdfadfasd", "Pinus contorta")) }