Basic Markdown

This is an R Markdown document (file.Rmd). Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents.

Try using the knit function. All the packages and objects must be included in the script, knit doesn’t take them from the local environment.

1 Markdown Syntax (This is a primary heading)

This is sample sentence number 1. This is sample sentence number 2. (Newlines require a double space!)

This is sample sentence number 3.

This is sample sentence number 4.

This text will appear italicized!

This text will appear bold!

*literal asterisks*

This text is fixed-width font that you can use for code blocks.
This text is displayed verbatim / preformatted

This text is in-line fixed-width font.

strikethrough

This is the first level of quoting

This is nested block-quote

If you need to add extra space between lines use this:



Three or more asterisks or dashes make a Horizontal Rule / Page Break *****

1.1 Lists

  • first item in list
  • second item in list
  • third item in list
  • You don’t need to use the same symbol all the time!
    • And you can add levels
  1. First item in list
  2. The same works with numbers (even if you don’t follow the right order)
  3. Third item in list
  4. ….

1.3 Images

You can take them from the web: logo1

Or use local files: logo2

2 Chunk options

Make a code chunk with three back ticks followed by an r in braces. End the chunk with three back ticks:

mydata <- cars
head(mydata)
##   speed dist
## 1     4    2
## 2     4   10
## 3     7    4
## 4     7   22
## 5     8   16
## 6     9   10
plot(mydata)

You can modify the format of the plot using fig.width = and fig.height =:

plot(mydata)

If you want to see the output but not the source code use the echo = FALSE parameter to prevent printing of the R code that generated the plot.

##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

You can also do results = "hide" and hide the resulting code instead.

summary(mydata)

To include code output into the Markdown text use :

rand <- rnorm(1)

Here you have a random number: 0.6806512.

For more details on using Knit chunk options go to http://yihui.name/knitr/options