A polar chart is a radial visualization that plots data points using distance from a center and angle from a fixed direction. This bullseye-style variant arranges categories in concentric rings, making it ideal for multi-dimensional categorical comparisons.
This sample visualizes the WHO's data on COVID-19 vaccine candidates undergoing clinical studies as of February 2022, organized by vaccine platform type and trial phase. It loads data from an external JSON file and uses marker series with legend-controlled dose groupings, ordinal scales on both axes, custom color palette, inner radius for the bullseye hole, and a detailed tooltip showing vaccine type, developer, and dosage schedule.
Follow the step-by-step Polar Chart Tutorial to learn how this chart was built. See the Polar Chart documentation for all configuration options.