October 2017
Beginner to intermediate
236 pages
7h 38m
English
Content preview from Modern R Programming Cookbook
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How it works…
Let's take a look at the following process sequentially:
- The url() function takes a character string as an input and creates a connection between the web page and the R session.
- After establishing the connection, you can read each line of the HTML source code of the page. The output will be a vector of character strings. This output contains HTML tags, punctuation, numbers, and so on. Here is the partial output of the HTML source code extracted from the link:
> htmlText[1:6] [1] "<!DOCTYPE html>" [2] "<html class=\"client-nojs\" lang=\"en\" dir=\"ltr\">" [3] "<head>" [4] "<meta charset=\"UTF-8\"/>" [5] "<title>Programming with Big Data in R - Wikipedia</title>" [6] "<script>document.documentElement.className = document.documentElement.className.replace( ...