Description of the fields in the resulting geo-located dataset.
The keyword dataset contains only the rows marked with a *

  Field          Type        Description
  -----          ----        -----------
  user_id        Int.        User identifier as defined by Twitter.
* tweet_id       Int.        Tweet identifier as defined by Twitter.
* timestamp      Int.        Tweet time-stamp.
  geolocation    Dbl, Dbl.   Tweet latitude and longitude.
  n_friends      Int.        # of friends of the user who tweeted.
  n_followers    Int.        # of followers of the user who tweeted.
  reg1           String.     Macro-region (in Portuguese).
  reg2           String.     Micro-region (in Portuguese).
  city           String.     Identifies the city.
  keyword        Boolean.    Whether tweet contains a keyword.
* kw_type        String.     Category associated with tweet.
  user_kw        Boolean.    Whether user used a keyword. bottomrule