Modern R Programming Cookbook

How to do it…

Let's take a look at the following steps to learn how to use a regular expression in text processing:

1. To read the text from an URL, first, you need to create a connection between your R session and the web page.
2. Note that your computer must be connected to the internet to run this recipe. Once you have connected and created the connection of R session, you are ready to retrieve the HTML code form of the page. Here is the code to do the whole thing:

        sourceURL <-         "https://en.wikipedia.org/wiki/Programming_with_Big_Data_in_R"        link2web <- url(sourceURL)        htmlText <- readLines(link2web)        close(link2web)

3. Now you have the HTML text in an object called htmlText. This object contains plain text as well as HTML tag pairs. The task ...