Chapter 20. Odometer
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## Chapter 20. Odometer

## 20.1. Introduction

### Note

This module is only available in the pro-version of the library.

Odometer graphs uses the metaphor of an old fashioned speedometer for cars. It is normally used to give a quick overview of one specific parameter. Experience have shown that this type of metaphor is easily and quickly understood by most people. By adding color indications to the odometer it is very quick to see whether or not a specific value is within a allowed range or outside.

Figure 20.1 shows an overview of some typical odometers created with the library.

Figure 20.1. Odometers

### 20.1.1. Features

Odometers produced with this package have a wide range of functionality and as you would expect almost every bit of visual layout is in one way or the other customisable. For simple use there are suitable default values for most parameters which will make creation of simple Odometer just a matter of a few lines of code.

Among other things Odometers support the following features:

- Both half (semi-circle) and full (circle) odometers are supported

- Fully customizable scales and odometer sizes

- Different size and shapes of the indicator needles

- Scale color indicators

- Multiple dials in the same graph

- Full support for library standard fonts and colors

- Automatic layout engine for multiple plots in the same graph which aids in positioning of the graphs without having to specify pixel coordinates

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19.6. Case study: Adding a table to a bar graph | Home | 20.2. Creating and formatting basic odometer graphs