Writing Reports in R using R Markdown

R Markdown enables you to generate reproducible and dynamic reports straight from your R code, documenting your works as an HTML, PDF, Word, slideshows, and more.
We will use knitrand rmarkdown packages to write R Markdown files in Rstudio and generate report in various formats.

Let’s create a report on analysis of ‘basic salary’ data.

#Install R Packages
install.packages("knitr")
install.packages("rmarkdown")

Open .Rmd File:

• In the menu bar of RStudio, click File -> New File -> R Markdown.
  

• You will see an untitled .Rmd file. Save the file File -> Save As…

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.Rmd Structure:

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Write Document:

• YAML Header:

  An R Markdown file always starts with a header written using YAML syntax. There are two default elements in RStudio YAML header:
  
• title: the title of your document. Note, this is not the same as file name.
  
• output: what format will the output be in.

Few of the output formats available to use with R Markdown are as follows:

• Markdown Text:

  Markdown is a human readable syntax for formatting text documents. It can be used to produce nicely formatted documents including pdf’s, web pages and more. Markdown syntax is used to write the text in the R Markdown file. Define the objective of the analysis:
  
  Few of the formatting Syntaxes are as follows:

• Chunks :

  Code chunks in an R Markdown document contain your R code. Code Chunks start and end with ```.
  Codes for aggregation and boxplot creation:
  
  

Arguments can be added to each code chunk, which allow you to customize how or if you want code to be processed or appear on the rendered output (pdf document, html document, etc).
Here we have specified echo=TRUE to display the code along with the results.
Comments can be added using ‘#’ followed by the text.

R Code Chunk Arguments:

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Generate Report:

• Click the knit pull down button.
• You can create reports in various formats from a single .Rmd file. So from the pull down menu of Knit select the format for your report.
• The file produced after knitting will automatically open and be saved I the current working directory.

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Output as an HTML Document:

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Output as a Word Document:

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