title: Retrieve retroactive list of Twitter follower IDs in R
body: <p>I'm trying to use R to retroactively retrieve the full list of Donald Trump's followers from April 19, 2016.  As of now, my code looks like this:</p>
  
  <pre><code>library(httr)
  library(twitteR)
  library(base64enc)
  library(igraph)
  library(maps)
  library(geosphere)
  library(RColorBrewer)
  consumerKey &lt;- "xxxxxxxxxx"
  consumerSecret &lt;- "xxxxxxxxxx"
  accessToken &lt;- "xxxxxxxxxx"
  accessSecret &lt;- "xxxxxxxxxx"
  setup_twitter_oauth(consumer_key=consumerKey, consumer_secret=consumerSecret, access_token=accessToken, access_secret=accessSecret)
  me &lt;- getUser("realdonaldtrump")
  followers &lt;- me$getFollowers()
  followerIDs &lt;- me$getFollowerIDs()
  </code></pre>
  
  <p>(I've replaced my consumer key/secret and access token/secret with x's, since you're not supposed to share those codes.)</p>
  
  <p>This code gets stuck when it hits the second to last line, because Donald Trump has over 9 million followers. So, what I'm unclear on is: 1) how to retrieve the full list of followers, and 2) how to retroactively retrieve the list from April 19th of this year.</p>