CivicTwitter R Package
You must do this first as the API calls require this authorization header to work
## set bearer token
bearer_token <- '#your_bearer_token_here#'
headers <- set_bearer_token(bearer_token)
## by username
df <- get_user_by_username("SNFAgoraJHU")
## by userid
df <- get_user_by_id("13205222")
## requires user_id
df <- get_user_followers("1164992903468343297")
## optional parameters for since.id, start.time, and end.time
df <- get_user_timeline("26657119")