Radar Chart
Radar charts, also known as spider charts or web charts, are a powerful way to visualize multivariate data across several quantitative variables.
Radar Charts allow visual comparison across multiple dimensions at once.
An example of an embedded radar chart
Creating an Effective Radar Chart
Below are the recommended data types to show on each axis:
- X-Axis Categorical data
- Y-Axis Numerical values
- Group Axis Categorical data
Description
A radar chart consists of a sequence of equi-angular spokes with each spoke representing one variable.
The data values for each variable are plotted along its corresponding axis and connected to form a polygon. This creates a “web-like” appearance that allows for quick visual comparison across multiple dimensions at once.
Ideal Data for Radar Charts
The best data for radar charts typically includes:
- Multiple Variables: Data with 3-10 different dimensions or categories
- Similar Scales: Variables measured on comparable scales (or normalized data)
- Related Metrics: Categories that logically belong to the same group
- Categorical Data with Numeric Values: Quantifiable measurements across distinct categories
When to Use Radar Charts
Radar charts excel in these scenarios:
- Performance Analysis: Comparing strengths and weaknesses across multiple attributes
- Skill Assessment: Visualizing competencies or abilities across different areas
- Product Comparison: Contrasting features or specifications of multiple products
- Before/After Comparisons: Displaying changes across various metrics over time
- Team Evaluation: Assessing group performance across different categories