You may ask:
If these questions bother you at least once, then you need to learn “Markdown/RMarkdown”.
The most recent version of R-studio has added the “R Markdown” file type as default. You can create an “R Markdown” file.
The R Markdown file can generate three types of files as the report: HTML, pdf, and word. You can generate by clicking the “Knit” button as follows: If everything goes correct, you will have the HTML/pdf/word file generated and popped-up. PS: the pdf file generating process require LaTex (such as MikTex) installed.
headers - A single hashtag: first-level header. Two hashtags, ##
, creates a second-level header, and so on.
italicized and bold text - one asterisk, like this without realizing it. Two asterisks, like this, easy to use.
lists - Use asterisks or dash to create bullet points.
hyperlinks - create a hyperlink like this Data-Mining.
# Say Hello to **Data Mining** in Markdown
* [Data Mining in R on Github](https://yanyudm.github.io/Data-Mining-R/)
* [Markdown Syntax](https://daringfireball.net/projects/markdown/basics)
* [StackOverflow](www.stackoverflow.com)
* [Reddit](www.reddit.com)
## R Markdown is a special type of Markdown in R
knitr
is an R package that extends the markdown syntax. One of the most important functions of knitr
is to include exectuable R code. Then, with the codes inside the paragraph, the technical report will be more readable than that not including codes. Besides, with knitr
, the results of executed codes can be automatically included in the output report, which is a great feature. This feature makes your analyses “reproducible”. In this way, you can easily change your codes. Then, when you knit
, the the results in your output report will be updated with your new codes.
Here’s some code
dim(iris)
## [1] 150 5
Here’s a plot
More settings of the output of code chunks can be found rmarkdown and knitr websites.
To include some calculation by R code in a line, one can surround the codes as follows:
Two plus two equals 4. (Use a pair of backticks and the letter r like this: ` r 2+2 `)