Chapter 6. Gauge, Polar, and Range Charts

In this chapter we will learn how to create a gauge chart step by step. A gauge chart is very different from other Highcharts graphs. We will explore the new settings by plotting something similar to a twin-dials Fiat 500 speedometer. After that we will review the structure of the polar chart and its similarity with other charts. Then we will move on to examine how to create a range chart by using examples from the past chapter. Finally, we will use a gauge chart to tweak the radial gradient in stages to achieve the desired effect. In this chapter we will cover the following:

• Plotting a speedometer gauge chart

• Converting a spline chart to a polar/radar chart

• Plotting range charts with market index data

• Using a radial gradient on a gauge chart