Chunk a flat list of cells into grid rows of at most columns items (row-major). columns omitted or non-positive means "unbounded" — Vega-Lite's default wrap layout is a single row.
columns
Optional
Chunk a flat list of cells into grid rows of at most
columnsitems (row-major).columnsomitted or non-positive means "unbounded" — Vega-Lite's default wrap layout is a single row.