Tutorial: Building a D3.js Calendar Heatmap (to visualize StackOverflow Usage Data) by Máté Huszárik Last updated: May 08, 2019 Let's take a look at StackOverflow’s usage statistics by creating an interactive calendar heatmap using D3.js!
D3.js Tutorial: Building Interactive Bar Charts with JavaScript by Máté Huszárik Last updated: Aug 01, 2018 From this D3.js Tutorial you can learn how to create beautiful, interactive bar charts with JavaScript! Real life examples and code-snippets inside.