scatter are convenience wrappers
around a generic
xy_plot function (not currently exported). Each function takes additional keyword
mark which can take an array of mark types. As such, to make a combination of a bar plot and line plot,
you can either specify
bar, etc. as the base chart type, then set the appropriate mark option to get the desired output.
Note that by default,
area defaults to a stacked bar chart (i.e.
stack = true). Be careful when modifying the marks for
area, as the stacked series’ would be incorrect as a multiple line plot (e.g. line plots conventionally aren’t stacked).