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Interactive Dashboards and Data Apps with Plotly and Dash

You're reading from   Interactive Dashboards and Data Apps with Plotly and Dash Harness the power of a fully fledged frontend web framework in Python – no JavaScript required

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Product type Paperback
Published in May 2021
Publisher Packt
ISBN-13 9781800568914
Length 364 pages
Edition 1st Edition
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Author (1):
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Elias Dabbas Elias Dabbas
Author Profile Icon Elias Dabbas
Elias Dabbas
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Table of Contents (18) Chapters Close

Preface 1. Section 1: Building a Dash App
2. Chapter 1: Overview of the Dash Ecosystem FREE CHAPTER 3. Chapter 2: Exploring the Structure of a Dash App 4. Chapter 3: Working with Plotly's Figure Objects 5. Chapter 4: Data Manipulation and Preparation, Paving the Way to Plotly Express 6. Section 2: Adding Functionality to Your App with Real Data
7. Chapter 5: Interactively Comparing Values with Bar Charts and Dropdown Menus 8. Chapter 6: Exploring Variables with Scatter Plots and Filtering Subsets with Sliders 9. Chapter 7: Exploring Map Plots and Enriching Your Dashboards with Markdown 10. Chapter 8: Calculating the Frequency of Your Data with Histograms and Building Interactive Tables 11. Section 3: Taking Your App to the Next Level
12. Chapter 9: Letting Your Data Speak for Itself with Machine Learning 13. Chapter 10: Turbo-charge Your Apps with Advanced Callbacks 14. Chapter 11: URLs and Multi-Page Apps 15. Chapter 12: Deploying Your App 16. Chapter 13: Next Steps 17. Other Books You May Enjoy

Parsing URLs and using their components to modify parts of the app

Having established some working knowledge about how Location and Link components work, we want to use this in our app. The plan is to add 169 new pages using three callbacks and adding a few new layout elements. The user will have a drop-down menu of countries to choose from. Selecting a country modifies the URL, which will render the country layout. This layout will include a heading, a chart, and a table about the country in the URL.

Figure 11.2 shows a sample of a country page that we will build:

Figure 11.2 – A sample country page showing a chart including other countries as well

Figure 11.2 – A sample country page showing a chart including other countries as well

As you can see, we now have a template for a country page. This was triggered because the URL contained a country that is one of the available countries in the dataset. Otherwise, it will display the main app, containing all the components that we have built so far. Users can also click on the Home...

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