Book Image

Hands-On Time Series Analysis with R

By : Rami Krispin
Book Image

Hands-On Time Series Analysis with R

By: Rami Krispin

Overview of this book

Time-series analysis is the art of extracting meaningful insights from, and revealing patterns in, time-series data using statistical and data visualization approaches. These insights and patterns can then be utilized to explore past events and forecast future values in the series. This book explores the basics of time-series analysis with R and lays the foundation you need to build forecasting models. You will learn how to preprocess raw time-series data and clean and manipulate data with packages such as stats, lubridate, xts, and zoo. You will analyze data using both descriptive statistics and rich data visualization tools in R including the TSstudio, plotly, and ggplot2 packages. The book then delves into traditional forecasting models such as time-series linear regression, exponential smoothing (Holt, Holt-Winter, and more) and Auto-Regressive Integrated Moving Average (ARIMA) models with the stats and forecast packages. You'll also work on advanced time-series regression models with machine learning algorithms such as random forest and Gradient Boosting Machine using the h2o package. By the end of this book, you will have developed the skills necessary for exploring your data, identifying patterns, and building a forecasting model using various traditional and machine learning methods.
Table of Contents (14 chapters)

Manipulating the zoo and xts objects

One of the main advantages of the zoo class and, in particular, the xts class (with respect to the ts object), is their friendly and simple structure. This allows us to preprocess and manipulate these types of objects in a seamless manner. Both the zoo and the xts packages provide a variety of utility functions for working with these types of objects. In this section, we will introduce some of the main functions for manipulating the zoo and xts objects.

Merging time series objects

In some instances, you may want to join or merge different series into a single object. Both the zoo and xts packages provide functions for merging a time series object (including merging mixed classes, such as...