Book Image

Tableau 10 Complete Reference

By : Joshua N. Milligan, Tristan Guillevin
Book Image

Tableau 10 Complete Reference

By: Joshua N. Milligan, Tristan Guillevin

Overview of this book

Graphical presentation of data enables us to easily understand complex data sets. Tableau 10 Complete Reference provides easy-to-follow recipes with several use cases and real-world business scenarios to get you up and running with Tableau 10. This Learning Path begins with the history of data visualization and its importance in today's businesses. You'll also be introduced to Tableau - how to connect, clean, and analyze data in this visual analytics software. Then, you'll learn how to apply what you've learned by creating some simple calculations in Tableau and using Table Calculations to help drive greater analysis from your data. Next, you'll explore different advanced chart types in Tableau. These chart types require you to have some understanding of the Tableau interface and understand basic calculations. You’ll study in detail all dashboard techniques and best practices. A number of recipes specifically for geospatial visualization, analytics, and data preparation are also covered. Last but not least, you'll learn about the power of storytelling through the creation of interactive dashboards in Tableau. Through this Learning Path, you will gain confidence and competence to analyze and communicate data and insights more efficiently and effectively by creating compelling interactive charts, dashboards, and stories in Tableau. This Learning Path includes content from the following Packt products: • Learning Tableau 10 - Second Edition by Joshua N. Milligan • Getting Started with Tableau 2018.x by Tristan Guillevin
Table of Contents (20 chapters)
Title Page
About Packt
Contributors
Preface
8
Deeper Analysis - Trends, Clustering, Distributions, and Forecasting
Index

Level of Detail calculations


Level of Detail calculations (sometimes abbreviated as LoD calcs or LoD expressions) is a special kind of calculation that allows you to perform aggregations at a specified level of detail, which may be different from the level of detail defined in the view, and then work with the resulting value at a row level. In this way, you can think of LoD calculations as a hybrid between Row Level calculations and Aggregate Row Level calculations.

Level of Detail syntax

Level of Detail calculations follow this basic pattern of syntax:

{[TYPE] [Dimension 1],[Dimension 2] : AGG([Measure])} 

The parts of the preceding declaration are as follows:

  • TYPE: Is the type of LoD calculation (FIXED, INCLUDE, or EXCLUDE), which are described in detail in the following section.
  • Dimension 1, Dimension 2: Is a comma-separated list of dimension fields that define the level of detail at which the calculation will be performed. You may use any number of dimensions to define the level of detail...