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Mastering Tableau 2023

Mastering Tableau 2023

By : Marleen Meier
4.7 (36)
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Mastering Tableau 2023

Mastering Tableau 2023

4.7 (36)
By: Marleen Meier

Overview of this book

This edition of the bestselling Tableau guide will teach you how to leverage Tableau's newest features and offerings in various paradigms of the BI domain. Updated with fresh topics, including the newest features in Tableau Server, Prep, and Desktop, as well as up-to-date examples, this book will take you from mastering essential Tableau concepts to advance functionalities. A chapter on data governance has also been added. Throughout this book, you'll learn how to use Tableau Hyper files and Prep Builder to easily perform data preparation and handling, as well as complex joins, spatial joins, unions, and data blending tasks using practical examples. You'll also get to grips with executing data densification and explore other expert-level examples to help you with calculations, mapping, and visual design using Tableau extensions. Later chapters will teach you all about improving dashboard performance, connecting to Tableau Server, and understanding data visualization with examples. Finally, you'll cover advanced use cases, such as self-service analysis, time series analysis, geo-spatial analysis, and how to connect Tableau to Python and R to implement programming functionalities within Tableau. By the end of this book, you'll have mastered Tableau 2023 and be able to tackle common and advanced challenges in the BI domain.
Table of Contents (19 chapters)
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17
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18
Index

Creating custom polygons

Geographic areas for which Tableau natively provides polygons include worldwide airport codes, cities, countries, regions, territories, states, provinces, and some postcodes and second-level administrative districts (county-equivalents): U.S. area codes, Core-Based Statistical Areas (CBSAs), Metropolitan Statistical Areas (MSAs), congressional districts, and ZIP codes. This means, for example, that a filled map can easily be created for the countries of the world. Simply copy a list of the world’s countries (Ctrl + C) and paste that list into Tableau by pressing Ctrl + V while your mouse is located on an empty worksheet in Tableau Desktop. A new data source will be added to the top right under Data. Next, set the View type in Tableau to Filled Map and place the country list on the Detail shelf. Tableau will automatically draw polygons for each of those data points:

Figure 9.9: Native polygons

There are some geographic types for which Tableau...

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