innerRadius property
dynamic
innerRadius
getter/setter pair
In a gauge chart, this option determines the inner radius of the
plot band that stretches along the perimeter. It can be given as
a percentage string, like "100%", or as a pixel number, like 100.
By default, the inner radius is controlled by the thickness option.
API Docs: https://api.highcharts.com/highcharts/yAxis.plotBands.innerRadius
Implementation
dynamic innerRadius;