Converts list columns that containing all atomic elements into character vectors and vice versa (for appropriate named variables according to the rtweet package)
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Data frame with list columns or converted-to-character (flattened) columns.
If recursive list columns are contained within the data frame, relevant columns will still be converted to atomic types but output will also be accompanied with a warning message.
'flatten' flattens list columns by pasting them into a single string for each observations. For example, a tweet that mentions four other users, for the mentions_user_id variable, it will include the four user IDs separated by a space.
'unflatten“ splits on spaces to convert into list columns any columns with the following names: hashtags, symbols, urls_url, urls_t.co, urls_expanded_url, media_url, media_t.co, media_expanded_url, media_type, ext_media_url, ext_media_t.co, ext_media_expanded_url, mentions_user_id, mentions_screen_name, geo_coords, coords_coords, bbox_coords, mentions_screen_name
If flattened, then data frame where non-recursive list columns—that is, list columns that contain only atomic, or non-list, elements—have been converted to character vectors. If unflattened, this function splits on spaces columns originally returned as lists by functions in rtweet package. See details for more information.
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