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Exercise

Parse hyperlinks into a data frame

Have a look at the following ul-list of "helpful links":

Helpful links

  • Wikipedia
  • Dictionary
  • Search Engine

Compiled with help from Google.

The corresponding HTML code is available as a string in hyperlink_html.

In this exercise, you'll parse these links into an R data frame. You'll use tibble(), a function from the Tidyverse, for that. tibble() is basically a trimmed down version of data.frame(), which you certainly already know. Just like data.frame(), you specify column names and data as key-value-pairs, like so:

my_tibble <- tibble(
  column_name_1 = data_1,
  column_name_2 = data_2,
  ...
)
Instructions
100 XP
  • Extract all the a nodes from the bulleted list with the rvest function(s) introduced in the video.
  • Make sure not to extract the last link to Google, as it is not part of the bulleted list.
  • Parse both the domain (href attribute) and the link name (text node) into a data frame with columns domain and name, respectively.
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