Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Apache Superset Quick Start Guide

You're reading from   Apache Superset Quick Start Guide Develop interactive visualizations by creating user-friendly dashboards

Arrow left icon
Product type Paperback
Published in Dec 2018
Publisher
ISBN-13 9781788992244
Length 188 pages
Edition 1st Edition
Languages
Arrow right icon
Author (1):
Arrow left icon
Shashank Shekhar Shashank Shekhar
Author Profile Icon Shashank Shekhar
Shashank Shekhar
Arrow right icon
View More author details
Toc

Table of Contents (10) Chapters Close

Preface 1. Getting Started with Data Exploration 2. Configuring Superset and Using SQL Lab FREE CHAPTER 3. User Authentication and Permissions 4. Visualizing Data in a Column 5. Comparing Feature Values 6. Drawing Connections between Entity Columns 7. Mapping Data That Has Location Information 8. Building Dashboards 9. Other Books You May Enjoy

Distribution – histogram

After uploading the file as a table, open it for visualization and select the Histogram option. Make sure that start_date is selected as Time Column. The Time window defined between Since and Until must be large enough to include all the books, because we do not want to do any Time window-specific analysis.

Page count is an important feature in the dataset, where each row is a book. It is a numerical value. So, to begin with let's look at a distribution plot of page counts. It will give us a sense of the variance in the feature value:

Data form for a histogram chart

The number of bins in a histogram limits the granularity of questions we can answer about the variance of the feature:

Distribution plot of page counts

Because we have set five bins, what is identifiable is that about 41-42 out of 93 books (approx. 44%-45%) have page counts of...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image