How to Draw a Radar Plot

What is radar?

The radar chart, is also known as web chart, spider chart, or spider web chart, is a chart that consists of a sequence of equi-angular spokes, called radii, where each spoke represents one of the variables that is impacting our data. The data length of a spoke is proportional to the magnitude of the variable for that data point in relation to the maximum magnitude of the variable across all data points.

The radar chart is useful in showing relative values for a single data point, or for comparing two or more items as they relate to various categories.

Unlike many of the other plot types we’ve learned about, Matplotlib doesn’t provide a radar function. In order to draw a radar chart, we need to write the code ourselves. Fortunately, drawing a radar chart is not difficult because Matplotlib supports drawing polar coordinates, and polar coordinates are the core of a radar chart.