Set Alpha Vantage API Key
av_api_key(api_key)
Optionally passed parameter to set Alpha Vantage api_key
.
Returns invisibly the currently set api_key
A wrapper for alphavantager::av_api_key()
tq_get()
get = "alphavantager"
if (FALSE) {
av_api_key(api_key = "foobar")
}