thickness method

VlChartMark thickness(
  1. double value
)

How thick a tick is drawn across its band.

A hi-lo-open-close chart's open and close are ticks, and a two-pixel one is what makes them read as marks rather than as hairlines.

value The thickness in pixels.

Returns This mark, so calls chain.

Implementation

VlChartMark thickness(double value) {
  return this.propNumber("thickness", value);
}