R-markdown code chunks
R-markdown is a markdown file with embedded blocks of R code called chunks. There are two types of R code chunks: inline and block.
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Inline chunks are added using the following syntax:
They are evaluated and inserted their output answer in place.
Block chunks have a different syntax:
And they come with several possible options. Here are the main ones (but there are many others):
- echo (boolean) controls wether the code inside chunk will be included in the document
- include (boolean) controls wether the output should be included in the document
- fig.width (numeric) sets the width of the output figures
- fig.height (numeric) sets the height of the output figures
- fig.cap (character) sets the figure captions
They are written in a simple
tag=value format like in the example above.
R-markdown document example
Below is a basic example of R-markdown file illustrating the way R code chunks are embedded inside r-markdown.
Converting R-markdown to other formats
knitr package can be used to evaluate R chunks inside R-markdown file and turn it into a regular markdown file.
The following steps are needed in order to turn R-markdown file into pdf/html:
R Markdown To Latex Free
- Convert R-markdown file to markdown file using
- Convert the obtained markdown file to pdf/html using specialized tools like pandoc.
Use Latex Packages In R Markdown
In addition to the above
knitr package has wrapper functions
knit2pdf() that can be used to produce the final document without the intermediate step of manually converting it to the markdown format:
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If the above example file was saved as
income.Rmd it can be converted to a
R Markdown Examples
The final document will be similar to the one below.