taxize (version 0.9.4)

downstream: Retrieve the downstream taxa for a given taxon name or ID.

Description

This function uses a while loop to continually collect children taxa down to the taxonomic rank that you specify in the downto parameter. You can get data from ITIS (itis), Catalogue of Life (col), GBIF (gbif), or NCBI (ncbi). There is no method exposed by these four services for getting taxa at a specific taxonomic rank, so we do it ourselves here.

Usage

downstream(...)
# S3 method for default
downstream(x, db = NULL, downto = NULL,
  intermediate = FALSE, rows = NA, ...)
# S3 method for tsn
downstream(x, db = NULL, downto = NULL,
  intermediate = FALSE, ...)
# S3 method for colid
downstream(x, db = NULL, downto = NULL,
  intermediate = FALSE, ...)
# S3 method for gbifid
downstream(x, db = NULL, downto = NULL,
  intermediate = FALSE, limit = 100, start = NULL, ...)
# S3 method for uid
downstream(x, db = NULL, downto = NULL,
  intermediate = FALSE, ...)
# S3 method for ids
downstream(x, db = NULL, downto = NULL,
  intermediate = FALSE, ...)

Arguments

...

Further args passed on to itis_downstream, col_downstream, gbif_downstream, or ncbi_downstream

x

Vector of taxa names (character) or IDs (character or numeric) to query.

db

character; database to query. One or more of itis, col, gbif, or ncbi. Note that each taxonomic data source has their own identifiers, so that if you provide the wrong db value for the identifier you could get a result, but it will likely be wrong (not what you were expecting).

downto

What taxonomic rank to go down to. One of: 'superkingdom', 'kingdom', 'subkingdom','infrakingdom','phylum','division','subphylum', 'subdivision','infradivision', 'superclass','class','subclass','infraclass', 'superorder','order','suborder','infraorder','superfamily','family', 'subfamily','tribe','subtribe','genus','subgenus','section','subsection', 'species group','species','subspecies','variety','form','subvariety','race', 'stirp', 'morph','aberration','subform', 'unspecified', 'no rank'

intermediate

(logical) If TRUE, return a list of length two with target taxon rank names, with additional list of data.frame's of intermediate taxonomic groups. Default: FALSE

rows

(numeric) Any number from 1 to infinity. If the default NA, all rows are considered. Note that this parameter is ignored if you pass in a taxonomic id of any of the acceptable classes: tsn, colid.

limit

Number of records to return

start

Record number to start at

Value

A named list of data.frames with the downstream names of every supplied taxa. You get an NA if there was no match in the database.

Authentication

See taxize-authentication for help on authentication

Examples

# NOT RUN {
# Plug in taxon IDs
downstream("015be25f6b061ba517f495394b80f108", db = "col",
  downto = "species")

# Plug in taxon names
downstream("Insecta", db = 'col', downto = 'order')
downstream("Apis", db = 'col', downto = 'species')
downstream("Apis", db = 'ncbi', downto = 'species')
downstream("Apis", db = 'itis', downto = 'species')
downstream(c("Apis","Epeoloides"), db = 'itis', downto = 'species')
downstream(c("Apis","Epeoloides"), db = 'col', downto = 'species')
downstream("Ursus", db = 'gbif', downto = 'species')
downstream(get_gbifid("Ursus"), db = 'gbif', downto = 'species')

# Plug in IDs
id <- get_colid("Apis")
downstream(id, downto = 'species')

## Equivalently, plug in the call to get the id via e.g., get_colid
## into downstream
identical(downstream(id, downto = 'species'),
         downstream(get_colid("Apis"), downto = 'species'))

id <- get_colid("Apis")
downstream(id, downto = 'species')
downstream(get_colid("Apis"), downto = 'species')

# Many taxa
sp <- names_list("genus", 3)
downstream(sp, db = 'col', downto = 'species')
downstream(sp, db = 'itis', downto = 'species')
downstream(sp, db = 'gbif', downto = 'species')

# Both data sources
ids <- get_ids("Apis", db = c('col','itis'))
downstream(ids, downto = 'species')
## same result
downstream(get_ids("Apis", db = c('col','itis')), downto = 'species')

# Collect intermediate names
## itis
downstream('Bangiophyceae', db="itis", downto="genus")
downstream('Bangiophyceae', db="itis", downto="genus", intermediate=TRUE)
downstream(get_tsn('Bangiophyceae'), downto="genus")
downstream(get_tsn('Bangiophyceae'), downto="genus", intermediate=TRUE)
## col
downstream(get_colid("Animalia"), downto="class")
downstream(get_colid("Animalia"), downto="class", intermediate=TRUE)

# Use the rows parameter
## note how in the second function call you don't get the prompt
downstream("Poa", db = 'col', downto="species")
downstream("Poa", db = 'col', downto="species", rows=1)

# use curl options
res <- downstream("Apis", db = 'col', downto = 'species', verbose = TRUE)
# }