opacity method

VlChartMark opacity(
  1. String field
)

How opaque the mark is.

Names a COLUMN, never a constant. .color("red") means a column called red; painting a mark red is markColor.

field The column name.

Returns This mark, so channels chain.

See also markOpacity.

Implementation

VlChartMark opacity(String field) {
  return this.channel("opacity", field);
}