Learn Chart.js

Radial scales

Two Chart.js chart types use radial scales: radar and polarArea. Radial charts that have a single scale are configured with the properties listed here. Some properties are similar to the properties used in Cartesian scales, but they have fewer configuration options:

Property	Value	Description
pointLabels	Object	Configure point labels
ticks	Object	Configure chart ticks
angleLines	Object	Configures radial grid lines
gridLines	Object	Configure concentric grid lines

Configuration objects for radial scales

These properties are used directly inside the options.scale object. For example:

options: {     scale: {         ticks: {…},         angleLines: {…},         gridLines: {…},         pointLabels: {…}     } }