Download Current Stock Quote
Fetch current stock quote(s) from specified source. At present this only handles sourcing quotes from Yahoo Finance and Alpha Vantage, but it can be extended to additional sources.
getQuote(Symbols, src = "yahoo", what, ...) standardQuote(src="yahoo") yahooQF(names) yahooQuote.EOD
Symbols |
character string of symbols, separated by semi-colons |
src |
source of data ("yahoo" and "av" are currently implemented) |
what |
what should be retrieved |
names |
which data should be retrieved |
... |
currently unused |
The number of symbols per request is limited to 200 for Yahoo! and 100 for
Alpha Vantage. getQuote will make multiple requests if more than the
maximum number of symbols are requested. It will then combine the results of
all the requests and return one data frame. The data frame will contain a
column for each requested data field, and the requested symbols will be stored
in the row names.
In order to import quotes from Alpha Vantage, you must obtain an
API key by completing a free, one-time registration at their website:
https://www.alphavantage.co/. Then you can call getQuote with
src = "av" and api.key = "[your key]".
The what argument allows for specific data to be requested. For
getQuote.yahoo, the value of what should be a quoteFormat
object like that returned by standardQuote. The yahooQF function
will create an interactive selection tool if the what argument is
missing. The what argument is currently ignored for Alpha Vantage data
because only a few fields are available.
standardQuote currently only applies to the Yahoo! data source. It
returns a quoteFormat object to use with the getQuote function.
yahooQuote.EOD is a constant quoteFormat object for OHLCV data.
Jeffrey A. Ryan (Yahoo) Ethan B. Smith (Alpha Vantage)
Yahoo! Finance https://finance.yahoo.com Alpha Vantage https://www.alphavantage.co
yahooQuote.EOD
## Not run:
getQuote("AAPL")
getQuote("QQQQ;SPY;^VXN",what=yahooQF(c("Bid","Ask")))
standardQuote()
yahooQF()
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.