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

Using scatter map plots

The main difference between the x and y axes and longitude and latitude is due to the shape of the Earth. As we approach the equator, the vertical meridians are as far away from each other as possible, and as we approach the North and South poles, they are as close as possible to each other. Figure 7.10 shows this:

Figure 7.10 – A map of the Earth, showing longitude and latitude lines

Figure 7.10 – A map of the Earth, showing longitude and latitude lines

In other words, as we approach the equator, we have a more rectangular shape, because a unit of longitude is close to a unit of latitude. Close to the poles, the proportions are completely different, and the rectangles start to approximate triangles. This is in contrast to a rectangular plane, where a vertical unit of distance corresponds to the same horizontal unit of distance, regardless of where you are on the plane. This assumes a linear scale on both axes, of course. An exception to this is the logarithmic axis, which we covered in Chapter...