R markdown

How to combine R code and reports?

Your data tells a story. Tell it with R Markdown. https://www.rstudio.com/wp-content/uploads/2016/03/rmarkdown-cheatsheet-2.0.pdf

Install the package:

install.packages("rmarkdown")

R Markdown provides an authoring framework for data science. You can use a single R Markdown file to both

• save and execute code
• generate high quality reports that can be shared with an audience

R Markdown documents are fully reproducible and support dozens of static and dynamic output formats

To get started in RStudio: New file -> R Markdown In Title put the title of future report

Save the file (Save).

To look at intermediate results click Knit HTML.

Add R code chunk

You can quickly insert chunks like these into your file with

• the keyboard shortcut Ctrl + Alt + I (OS X: Cmd + Option + I)
• the Add Chunk command in the editor toolbar

• or by typing the chunk delimiters {r} and .

Code + result:

```{r}
dim(iris)
```

Only code:

```{r eval=FALSE}
dim(iris)
```

Only result:

```{r echo=FALSE}
dim(iris)
```

Text formating

Inline code: code results can be inserted directly into the text:

We have 2+2=`r 2+2`

Italic:

*italics* and _italics_

Bold:

**bold** and __bold__

Other:

superscript^2^

~~strikethrough~~

Headers:

# Header 1  
## Header 2  
### Header 3  
#### Header 4
##### Header 5
###### Header 6 

Lists:

* unordered list  
* item 2
    +  sub-item 1  
    +  sub-item 2  

1. ordered list  
2. item 2
    +  sub-item 1  
    +  sub-item 2 

Formulas:

$A = \pi*r^{2}$

External pic:

![](/Users/pics/Koala.jpg)

Link:

[link](www.rstudio.com)
<http://rmarkdown.rstudio.com>

Page break:

***

Block quote:

> block quote 

Table:

Table Header | Second Header  
------------- | -------------  
Table Cell | Cell 2  
Cell 3 | Cell 4