# Radar Chart

> This documentation contains information on what a radar chart is, when to use radar chart visualization, and how to create a radar chart in Holistics

Radar Chart presents your multivariate data on axes starting from the same point. Values on the axes of the same subject are connected with a straight line, which makes the visualization look like "radar".

## When to use Radar Chart?

A Radar Chart is a visually striking means to show outliers and commonalities between objects or to show that a subject is superior to others in every variable. 

Radar Chart is only suitable for **ordinal measurements,** for example ranking or ratings.

## Create a Radar Chart

To use Radar Chart, your data need to have the following form:

- Name / ID of the subject to be compared
- The **ordinal variables** that represent the measurements. These variables must be of the **same scale,** and they quantify the subject's **better or worse** quality.

### Compare multiple subjects on multiple measurements

Place the Name / ID of the subject in **Legend** field, and the measurements in **Y Axis** field. This way the measurements will be visualized for individual subjects:

### Compare multiple subjects on one measurement

If you only need to compare your subjects on one measurement, simply put your subject's Name / ID in the X Axis field: