14) Web Tech 2

📖 Lecture

For our last week of the semester we provide an example of web scraping using a high-level approach that involves parsing XML and scraping data with functions from packages "xml2" and "rvest" (and a bit of "stringr").

📚 Reading

Read the following chapters from “R Web Technologies”:

• https://www.gastonsanchez.com/R-web-technologies/xml.html
• https://www.gastonsanchez.com/R-web-technologies/parsing-xml.html
• https://www.gastonsanchez.com/R-web-technologies/xpath.html

🔬 Lab

• Practice web scraping data.

🎯 Objectives

• Describe what web scraping is.
• Exaplain the purpose of Xpath expressions
• Scrape some web data using "rvest" functions.

🔔 Assignments

• App3 due on 04/26