Practical Data Wrangling

Getting and reading data

The first step is to retrieve a dataset and open it with a program capable of manipulating the data. The simplest way of retrieving a dataset is to find a data file. Python and R can be used to open, read, modify, and save data stored in static files. In Chapter 3, Reading, Exploring, and Modifying Data - Part I, I will introduce the JSON data format and show how to use Python to read, write and modify JSON data. In Chapter 4, Reading, Exploring, and Modifying Data - Part II, I will walk through how to use Python to work with data files in the CSV and XML data formats. In Chapter 6, Cleaning Numerical Data - An Introduction to R and Rstudio, I will introduce R and Rstudio, and show how to use R to read and manipulate ...