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

Compute using


The graph from the previous exercise calculates the percentage difference from year to year, which means that the value for each year is being computed relative to the previous year. We can ask Tableau Public to calculate the percentage difference from different years by clicking on the Context menu for a table calculation of this type, and then selecting Relative to. We can calculate the change from the first, next, previous (the default one), or last values in a partition.

In the following graph, which is a revision of the previous one, the bar height for each year shows the aggregated percentage difference in Remittances per Capita since 1980, which is the first year in the visualization. You can do this by performing the following steps:

  1. Click on the Context menu for the Remittances per Capita field on the Rows shelf.

  2. Click on Relative to.

  3. Select First, as shown in the following screenshot:

Then, perform the same calculation on GDP (current USD). We changed its use on the Rows...