Book Image

Creating Data Stories with Tableau Public

By : Ohmann
Book Image

Creating Data Stories with Tableau Public

By: Ohmann

Overview of this book

Tableau Public is a very useful tool in anyone's data reporting toolbox that allows authors to add an interactive data element to any article. It allows investigative journalists and bloggers to tell a “data story”, allowing others to explore your data visualization. The relative ease of Tableau Public visualization creation allows data stories to be developed rapidly. It allows readers to explore data associations in multiple-sourced public data, and uses state-of-the-art dashboard and chart graphics to immerse the users in an interactive experience. This book offers investigative journalists, bloggers, and other data story tellers a rich discussion of visualization creation topics, features, and functions. This book allows data story tellers to quickly gain confidence in understanding and expanding their visualization-creation knowledge, and allows them to quickly create interesting, interactive data visualizations to bring a richness and vibrancy to complex articles. The book takes you from basic concepts in visualization creation, like connecting to data sources, cleansing data, chart types, common functions, map creation, and publishing to the Web, to more advanced functions. It is a great overview and reference guide for beginner to intermediate Tableau Public data story tellers, and covers creation of Tableau Public visualizations of varying complexities.
Table of Contents (11 chapters)
10
Index

Types of calculations


There are several types of calculations that you can create, as listed previously. Some of them are common to other data management tools, but some, such as user calculations, are unique to Tableau Public.

When creating calculated fields, the functions that you can apply on a field depends on the type of that field. For instance, you can't perform multiplication functions on a string field (even if it contains only numbers) without first converting it to a numeric field. Similarly, you can't concatenate numeric values without first converting them to strings.

Basic mathematical functions, such as addition (+), subtraction (-), multiplication (*), division (/), and exponents (^), are created by typing the standard operators into the dialog box.

You can add functions by typing their names or filtering the list of functions to the appropriate group, or name, and then double-clicking on the best choice. The different types of functions that you can perform in Tableau Public...