Book Image

Interactive Visualization and Plotting with Julia

By : Diego Javier Zea
Book Image

Interactive Visualization and Plotting with Julia

By: Diego Javier Zea

Overview of this book

The Julia programming language offers a fresh perspective into the data visualization field. Interactive Visualization and Plotting with Julia begins by introducing the Julia language and the Plots package. The book then gives a quick overview of the Julia plotting ecosystem to help you choose the best library for your task. In particular, you will discover the many ways to create interactive visualizations with its packages. You’ll also leverage Pluto notebooks to gain interactivity and use them intensively through this book. You’ll find out how to create animations, a handy skill for communication and teaching. Then, the book shows how to solve data analysis problems using DataFrames and various plotting packages based on the grammar of graphics. Furthermore, you’ll discover how to create the most common statistical plots for data exploration. Also, you’ll learn to visualize geographically distributed data, graphs and networks, and biological data. Lastly, this book will go deeper into plot customizations with Plots, Makie, and Gadfly—focusing on the former—teaching you to create plot themes, arrange multiple plots into a single figure, and build new plot types. By the end of this Julia book, you’ll be able to create interactive and publication-quality static plots for data analysis and exploration tasks using Julia.
Table of Contents (19 chapters)
1
Section 1 – Getting Started
6
Section 2 – Advanced Plot Types
12
Section 3 – Mastering Plot Customization

Coloring our figures

This section will teach you to select and create colors and color schemes for Plots and Makie. Both packages base their color utilities on the Colors and ColorSchemes packages. So, Plots and Makie accept any Colorant or named color that the Colors package can parse as Colorant. In particular, the most popular way to set colors in those packages is by using a Symbol or String object containing the color name. For example, :red and "red" are valid indications to select the color red. You will find the list of named colors in the Colors package documentation at https://juliagraphics.github.io/Colors.jl/stable/namedcolors/. The Colors package supports CSS/SVG and X11 color names – it uses only the X11 names that do not clash with the CSS/SVG ones.

In the case of the Plots package, we can set a color using false or nothing to assign a fully transparent color. The Plots package also re-exports the Colorant type and the colorant string macro from Colors...