Gain insights into D3.js fundamentals, explore DOM manipulation, data binding, and SVG. Learn about creating maps, graphs, and network visualizations to master data-driven documentation.

Introduction to Visualization Using D3.js.png

In this course, you will learn the fundamentals of D3.js (stands for Data-Driven Documents), which is a JavaScript library mainly used for visualization.

In the first half of the course, you will cover DOM (Document Object Model) manipulation, method chaining, data binding, and data loading.

In the second half, you’ll cover visualization concepts and dive deep into SVG which is used to draw different geometrical shapes. After that, you’ll work with various maps and graphs in order to display your data. Lastly, you’ll learn about network visualization with the help of nodes and links.

By the end of this course, you will have a new, powerful data visualization library at your disposal.

Introduction to Visualization Using D3.js

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## Explanation
The solution is straightforward.
- We have made the same pie chart as we did in the [Draw a Pie Chart](https://www.educative.io/pageeditor/10370001/4609988201807872/4745086058364928) lesson.
- The only difference between the pie chart and the donut chart is `innerRadius` in **line 28**. It has a value of zero in the pie chart and a positive value in the donut chart. That's why we have changed the `innerRadius()` and set it equal to `50`. 

# Explanation
The solution is straightforward.
- We have made the same pie chart as we did in the [Draw a Pie Chart](https://www.educative.io/pageeditor/10370001/4609988201807872/4745086058364928) lesson.
- The only difference between the pie chart and the donut chart is `innerRadius` in **line 28**. It has a value of zero in the pie chart and a positive value in the donut chart. That's why we have changed the `innerRadius()` and set it equal to `50`. 

This review provides a detailed analysis to solve the 'Draw a Donut Chart' challenge.

Introduction

D3.js Fundamentals

Scales

Drawing Basic Shapes

Chart Fundamentals

Network Visualization, Hierarchical Data, and Interactivity

Conclusion

Solution Review: Draw a Donut Chart

Solution

Explanation