In this chapter, you learned how to configure the different kinds of scales supported by Chart.js: the linear scale used in radial charts, such as radar and polar area, and the Cartesian scales used in scatter, bubble, line, and bar charts. You can configure scales in ways that change how data is presented, or style the grid lines and labels to add context to a chart.

We also compared different types of Cartesian charts, showing why sometimes it's better to use a logarithmic scale instead of a linear scale. We created category charts without any numeric scales and explored time scales.

In the next chapter, we will explore configuration in greater detail, efficiently using colors, fonts, and interactivity to control the appearance of charts using callbacks.