The ts class is R's built-in format for a regular univariate time series object. Before we dive into the attributes of this class, let's pause and define regular time series data and its main characteristics.
At regular time series is defined as an ordered sequence of observations over time, which is captured at equally spaced time intervals (that is, every day, week, month, and so on). Whenever this condition ceases to exist, the series becomes an irregular time series. Since this book's main topic is time series analysis and the forecasting of regular time series data, the term time series, or series, refers to regular time series data unless stated otherwise.
The main characteristics of regular time series data is as follows:
- Cycle/period: A regular and repeating unit of time that split the series into consecutive and equally long...