If the API key is provided, sets the environmental variable. You can set your API key in four ways:
Arguments
- key
- the API key (obtained from https://quickstats.nass.usda.gov/api/) 
Details
- directly or as a variable from your - Rprogram:- nassqs_auth(key = "<your api key>"
- by setting - NASSQS_TOKENin your- Renvironment file (you'll never have to enter it again).
- by entering it into the console when asked (it will be stored for the rest of the session.) 
Examples
# Set the API key
nassqs_auth(key = "<your api key>")
Sys.getenv("NASSQS_TOKEN")
#> [1] "<your api key>"
