June 2019
Beginner to intermediate
360 pages
10h 55m
English
Content preview from Big Data Simplified
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Working with Big Data inR | 207
> sd(data$mpg)
[1] 7.815984
8.2.2 Basic Plots for Data Exploration
Even though statistical techniques gives a good idea about the nature and quality of data in
a data set, however, more effective data exploration is possible through visualization. R pro-
gramming provides a bunch of very strong libraries for data exploration using charts and plots.
The front-runner amongst them is the ggplot2 library. It was created by Hadley Wickham, the
ggplot2 library offers a comprehensive graphics module for creating elaborate and complex
plots.
In order to start using the library functions of ggplot2, we need to load the library as follows.
> library(ggplot2)
Let us now understand the different graphs used ...
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