historical_exchange_rates: Retrieve historical exchange rates
Description
Retrieves historical exchange rates between a currency pair
Usage
historical_exchange_rates(from, to, start_date, end_date)
Value
A data.frame containing exchange rate data for select currency pair
Arguments
- from
A currency code (see currencies() for supported codes)
- to
A currency code
- start_date
A start date (of the form "2010-01-01")
- end_date
An end date