BarMode
public enum BarMode : String, Encodable
Determines how bars at the same location coordinate are displayed on the graph.
With stack, the bars are stacked on top of one another With relative, the bars are stacked on top of one another, with negative values below the axis, positive values above With group, the bars are plotted next to one another centered around the shared location. With overlay, the bars are plotted over one another, you might need to an opacity to see multiple bars.