At its core, a Vega-Lite specification describes a single plot. When a facet
channel is added, the visualization is faceted into a trellis plot, which
contains multiple plots. Each plot in either a single plot or a trellis plot
is called a cell. Cell configuration allows us to customize each individual
single plot and each plot in a trellis plot.
width and height property of the cell configuration determine
the width of a visualization with a continuous x-scale and the height of
a visualization with a continuous y-scale respectively. Visit the
URL in the References section for more information.
fill
fill color
fill_opacity
0.0-1.0
stroke
stroke color
stroke_opacity
0.0-1.0
stroke_width
stroke of the width in pixels
stroke_dash
an array of alternating stroke, space lengths for creating
dashed or dotted lines.
stroke_dash_offset
the offset (in pixels) into which to begin drawing with the stroke dash array.