get_airnow_key() returns the configured AirNow API key. If
no key is set and ask is TRUE in an interactive session, you are
prompted for one; otherwise an error is raised.
The key is read from the AIRNOW_API_KEY environment variable. To set it
permanently, add AIRNOW_API_KEY=your-key to your ~/.Renviron file.
Keys are issued at https://docs.airnowapi.org/account/request/.
set_airnow_key() sets the AirNow API key for the current
session.
Usage
get_airnow_key(ask = is_interactive())
set_airnow_key(key = NULL, ask = is_interactive())
Arguments
- ask
Whether to prompt for the key if none is set. Prompting only
works in interactive sessions.
- key
The API key to use. If NULL and ask is TRUE, you are
prompted for one.
Value
get_airnow_key() returns a string.
set_airnow_key() returns the key, invisibly.
Examples
if (FALSE) { # \dontrun{
get_airnow_key()
} # }
if (FALSE) { # \dontrun{
set_airnow_key(key = "4d36e978-e325-11ce-bfc1-08002be10318")
} # }