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Data Analysis with R, Second Edition

Data Analysis with R, Second Edition - Second Edition

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Data Analysis with R, Second Edition

Data Analysis with R, Second Edition

3.5 (2)

Overview of this book

Frequently the tool of choice for academics, R has spread deep into the private sector and can be found in the production pipelines at some of the most advanced and successful enterprises. The power and domain-specificity of R allows the user to express complex analytics easily, quickly, and succinctly. Starting with the basics of R and statistical reasoning, this book dives into advanced predictive analytics, showing how to apply those techniques to real-world data though with real-world examples. Packed with engaging problems and exercises, this book begins with a review of R and its syntax with packages like Rcpp, ggplot2, and dplyr. From there, get to grips with the fundamentals of applied statistics and build on this knowledge to perform sophisticated and powerful analytics. Solve the difficulties relating to performing data analysis in practice and find solutions to working with messy data, large data, communicating results, and facilitating reproducibility. This book is engineered to be an invaluable resource through many stages of anyone’s career as a data analyst.
Table of Contents (19 chapters)
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Creating and plotting time series


A common approach in tutorials is to jump right into manipulating a plotting time series by using one of R's many built-in time series data sets. Here, I'd like to explain how to actually create a time series object (an R object of type ts) like you would if you were to have to perform forecasting on your own data.

I made available some special data sets that we'll use in this and future chapters by putting on a repository on the internet.

Let's first start by downloading one of these data sets and peering into its contents:

> download.file("https://raw.githubusercontent.com/tonyfischetti/dawr/master/forecasting/school-supplies.csv", "./school-supplies.csv")
> school <- read.csv("./school-supplies.csv")
> head(school)
thedate hits
1 2004-01 20
2 2004-02 24
3 2004-03 19
4 2004-04 26
5 2004-05 25
6 2004-06 24
> start(schoolts)
[1] 2004 1
> end(schoolts)
[1] 2018 3

This is a data set that contains the number of Google searches for school supplies...

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Data Analysis with R, Second Edition
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