setAPIKey

Download data from the Alpha Vantage API (<https://www.alphavantage.co/>).
Alpha Vantage is a RESTful API which provides various financial data,
including stock prices and technical indicators.
There is documentation for the underlying API available
here: <https://www.alphavantage.co/documentation/>. To get access to this API,
the user needs to first claim an API key: <https://www.alphavantage.co/support/>.

Alex Thompson

setAPIKey: Assign API key to environment.

Description

Usage

Arguments