webchem (version 1.1.1)

get_wdid: Get Wikidata Item ID

Description

Search www.wikidata.org for wikidata item identifiers. Note that this search is currently not limited to chemical substances, so be sure to check your results.

Usage

get_wdid(
  query,
  match = c("best", "first", "all", "ask", "na"),
  verbose = TRUE,
  language = "en"
)

Arguments

query

character; The searchterm

match

character; How should multiple hits be handeled? 'all' returns all matched IDs, 'first' only the first match, 'best' the best matching (by name) ID, 'ask' is a interactive mode and the user is asked for input, na' returns NA if multiple hits are found.

verbose

logical; print message during processing to console?

language

character; the language to search in

Value

if match = 'all' a list with ids, otherwise a dataframe with 4 columns: id, matched text, string distance to match and the queried string

Examples

# NOT RUN {
get_wdid('Triclosan', language = 'de')
get_wdid('DDT')
get_wdid('DDT', match = 'all')

# multiple inputs
comps <- c('Triclosan', 'Glyphosate')
get_wdid(comps)
# }