Select by class and ID with XPATH

Here's some HTML code that is similar to code you encountered in the last chapter (already read into an HTML document called weather_html):

<html>
  <body>
    <div id = 'first'>
      <h1 class = 'big'>Berlin Weather Station</h1>
      <p class = 'first'>Temperature: 20°C</p>
      <p class = 'second'>Humidity: 45%</p>
    </div>
    <div id = 'second'>...</div>
    <div id = 'third'>
      <p class = 'first'>Sunshine: 5hrs</p>
      <p class = 'second'>Precipitation: 0mm</p>
    </div>
  </body>
</html>

For this chapter, this code looks a bit more like real life. Your goal is to extract the precipitation reading from this weather station. Unfortunately, it can't be directly referenced through an ID.

Let's do this by setting up the building blocks step by step and then using them in combination!

Questo esercizio fa parte del corso

Web Scraping in R

Visualizza il corso

Esercizio pratico interattivo

Prova a risolvere questo esercizio completando il codice di esempio.

# Select all p elements
weather_html %>%
	html_elements(xpath = '___')

Modifica ed esegui il codice