By Thomas Mailund
- Perform information technological know-how and analytics utilizing information and the R programming language
- Visualize and discover facts, together with operating with huge facts units present in significant data
- Build an R package
- Test and payment your code
- Practice model control
- Profile and optimize your code
Read Online or Download Beginning Data Science in R: Data Analysis, Visualization, and Modelling for the Data Scientist PDF
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Extra resources for Beginning Data Science in R: Data Analysis, Visualization, and Modelling for the Data Scientist
It is a very powerful, but also a very complicated, tool and it is far beyond what we can cover in this book. Just know that it is there if you want to take document writing in R Markdown further than what you can readily do in RStudio. As I mentioned, there are actually three languages involved in an R Markdown document. We will handle them in order—first the header language, which is YAML, then the text formatting language, which is Markdown, and then finally how R is embedded in a document. The YAML Language YAML is a language for specifying key-value data.
The result is a new file with some boilerplate text in it, as shown in Figure 2-1. At the top of the file, between two lines containing just --- is some meta-information for the document, and after the second --is the actual text. It consists of a mix of text, formatted in the Markdown language, and R code. 30 Chapter 2 ■ Reproducible Analysis Figure 2-1. A new R Markdown file In the toolbar above the open file, there is a menu option called Knit HTML. If you click it, it will translate the R Markdown into an HTML document and open it, as shown in Figure 2-2.
Before the link. [Image description](URL to image) will insert the image pointed to by URL to image with a caption saying Image description. The URL here will typically be a local file, but it can be a remote file referred to via HTTP. With long URLs, the marked-up text can be hard to read even with this simple notation and it is possible to remove the URLs from the actual text and place them later in the document, for example, after the paragraph referring to the URL or at the end of the document.