Get the date when the article was published.

Usage

almdatepub(doi, get = NA, sleep = 0, url = "http://alm.plos.org/articles", key = getOption("PlosApiKey",
  stop("need an API key for PLoS Journals")), ..., curl = getCurlHandle())

Arguments

doi

Digital object identifier for an article in PLoS Journals

get

Get year, month, or day; if unspecified, whole date returned.

sleep

Time (in seconds) before function sends API call - defaults to zero. Set to higher number if you are using this function in a loop with many API calls.

key

your PLoS API key, either enter, or loads from .Rprofile

url

the PLoS API url for the function (should be left to default)

...

optional additional curl options (debugging tools mostly)

curl

If using in a loop, call getCurlHandle() first and pass the returned value in here (avoids unnecessary footprint)

Examples

almdatepub('10.1371/journal.pone.0026871')
[1] "2012-03-26"

almdatepub('10.1371/journal.pone.0026871', 'year')
[1] 2012


# DOI that does not work, gives NA so that looping isn't interrupted
# almdatepub(doi="10.1371/journal.pone.002699", get='year')