Data Science – How to Load Data included with R

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This article represents different ways in which data from different R packages could be loaded. One of the important aspect of getting on aboard with Data Science is to play with data as much as possible while one is going through the  learning phase. When doing that, some of the key activities include data loading, data extraction, data wrangling/munging etc. This is where I found that loading data from different R packages is one of the key to get access to these data sets and hence, decided to write this quick article. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos.

Following are two different ways in which one could load data included with R:

  • Load data after loading package
  • Load data without loading

The below instructions assumes that you have installed the package prior to loading the datasets available with the package.

 

Load Data after Loading Package

Following is a simple command set one needs to execute to load data available with different R packages. I shall take GGPlot package example.

  • Load the package using command, “require(packageName)”. For example, require(ggplot2)
  • Load the data using command, “data(dataSetName)”. For example, data(diamonds)

Once loaded, you could quickly check upon data using command, “head(dataSetName)”. For example, data(diamonds)

 

Load Data Without Loading Package

With just one command, you could load the dataset without loading the package. Following is the command:

  • Load the dataset using data(dataSetName, package=”packageName”). For example, data(diamonds, package=”ggplot2″)

Again, to make sure that data is loaded correctly, use “head” command. For example, head(diamonds)

If you wanted to check upon all the available datasets available from base package as well as other installed packages, use “data()”. It displays all datasets available with base and installed packages.

Ajitesh Kumar
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