This function lets the user download historical currency exchange
rate between two currencies.
Usage
get_currency(
currency_pair,
from = Sys.Date() - 99,
to = Sys.Date(),
fill = FALSE,
...
)
Arguments
- currency_pair
Character. Which currency exchange do you
wish to get the history from? i.e, USD/COP, EUR/USD...
- from
Date. From date
- to
Date. To date
- fill
Boolean. Fill weekends and non-quoted dates with
previous values?
- ...
Additional parameters.
Value
data.frame. Result of fetching online data for currency_pair
grouped by date. A single-day request returns the last available quote
within the previous 14 days when that day is not quoted. If the provider
cannot be reached or has no quotes, returns an empty data.frame with
date and rate columns and an informative message.
No cached quotes are used when the provider is unavailable.
Examples
if (FALSE) { # \dontrun{
# Requires an external currency provider; do not run in automated checks.
# For today (or any one single date)
get_currency("USD/COP", from = Sys.Date())
# For multiple dates
get_currency("EUR/USD", from = Sys.Date() - 7, fill = TRUE)
} # }
