Spider Chart

Introduction

The spider chart, also known as star plot or radar chart, is a descriptive tool that allows the comparison of values of multiples variables over a small number of observations. Each observation determines a polygon around a central point that can be compared visually.

Inputs

To illustrate the use of the Spider Chart tool, we will use run it on some disease data for the Grampians

  • Select Grampians SA3 as your area
  • Select SA2 Chronic Disease – Modelled Estimate as your dataset, selecting all the variables.

Once you have loaded the data, open the Spider Plot tool (Tools → Charts Spider Plot) and enter the parameters as shown below. These are all explained below the image as well:

spider_01

[Click to Enlarge]

  • Dataset Input: The dataset that you would like to run your analysis on. There is a maximum of 9 rows. For this, we have selected SA2 Chronic Disease – Modelled Estimate.
  • Variable List: This refers to what will be on the ‘spokes’ of the web. It is important to select at least 3 variables. Also, make sure that the variables that you select are similar to each other – for instance, different counts of diseases, or perhaps different counts of individuals within age groups, or income groups. In this instance, we are selecting:
    • Persons with Mental and Behavioural Problems – Rate per 100,
    • Musculoskeletal System Diseases – Rate per 100,
    • Males with Mental and Behavioural Problems – Rate per 100,
    • Hypertension – Rate per 100,High Cholesterol – Rate per 100
  • Observation Labels: This refers to your column that tells you the codes or names of the areas within your table. In this instance we have selected Statistical Area Level 2 Name
  • Chart Title: Here you can specify the name of your chart – we have used Spider Chart
  • Grid: Specify whether or not you want a grid (checked box) or no grid (empty box) on your chart
  • Greyscale: Specify whether or not you want your graph in greyscale (checked box) or in colour (empty box)

Once you have entered your parameters, click Add and  Display to execute the tool.

Outputs

Once your tool has run, click the Display button. Your graph should look something like the image below:

spider_02

[Click to Enlarge]