get_exchangerate_from: Retrieves the exchange rate from a specific date.

In rnbp: Wrapper for the National Bank of Poland API

Description

Retrieves the exchange rate from a specific date.

Usage

get_exchangerate_from(table, currency_code, date)

Arguments

table	specifies which from which table the exchange rate should be fetched.
currency_code	code of the currency for which the exchange rate should be fetched.
date	date from which the exchange rate should be fetched.

Details

As exchange rates are not published on the weekends fetching values from a weekend date will result in a 404 error. In those cases the function returns an error with an appropriate message.

Value

nbp_api_response object containing the exchange rate from the specified date.

See Also

https://api.nbp.pl/#kursyWalut

Other rates: get_current_exchangerate(), get_exchangerate_from_interval(), get_last_n_exchangerates(), get_todays_exchangerate()

Examples

  tryCatch({
      ## Fetch the euro exchange rate from a week ago
      response <- get_exchangerate_from("A", "EUR", Sys.Date() - 7)
      ## Preview response content
      response$content
    },
    error = function(e) message(e)
  )

rnbp documentation built on June 7, 2021, 9:07 a.m.