Book Image

Interactive Dashboards and Data Apps with Plotly and Dash

By : Elias Dabbas
Book Image

Interactive Dashboards and Data Apps with Plotly and Dash

By: Elias Dabbas

Overview of this book

Plotly's Dash framework is a life-saver for Python developers who want to develop complete data apps and interactive dashboards without JavaScript, but you'll need to have the right guide to make sure you’re getting the most of it. With the help of this book, you'll be able to explore the functionalities of Dash for visualizing data in different ways. Interactive Dashboards and Data Apps with Plotly and Dash will first give you an overview of the Dash ecosystem, its main packages, and the third-party packages crucial for structuring and building different parts of your apps. You'll learn how to create a basic Dash app and add different features to it. Next, you’ll integrate controls such as dropdowns, checkboxes, sliders, date pickers, and more in the app and then link them to charts and other outputs. Depending on the data you are visualizing, you'll also add several types of charts, including scatter plots, line plots, bar charts, histograms, and maps, as well as explore the options available for customizing them. By the end of this book, you'll have developed the skills you need to create and deploy an interactive dashboard, handle complexities and code refactoring, and understand the process of improving your application.
Table of Contents (18 chapters)
1
Section 1: Building a Dash App
6
Section 2: Adding Functionality to Your App with Real Data
11
Section 3: Taking Your App to the Next Level

Incorporating the new URL interactivity into the app

Having created a dropdown that automatically changes the URL based on the selected value, we have allowed our users to go from page to page as they please. We now need to manage the display of the right content based on the selected country.

Since the code was already written, one thing you can do is run the app in debug mode and get a visual representation of all the available components and see how they are connected with callbacks.

Figure 11.5 shows the graph of the callbacks that have been created. Let's use it to understand how this functionality was implemented:

Figure 11.5 – The various components and callbacks managing the URL functionality

Figure 11.5 – The various components and callbacks managing the URL functionality

Let's go through the figure from left to right and see what is going on here. You can refer to Figure 11.2 to see how this graph corresponds to visible components in the app:

  • Everything starts with the pathname attribute of...