Frequently used R packages

Compared to other programming languages, it is relatively easy to write an extension (package) to R and publish your work through CRAN. Some user-written packages are often easier to use for certain tasks than figuring out how to do something in base R. These are some packages that should be useful as you start using R.

• dplyr, for data transformation and analysis
• ggplot2, for data visualization
• knitr and rmarkdown, for authoring R Markdown documents
• shiny, for building interactive web apps with R