vl.markArea({interpolate:"monotone",stroke:"black",fill:"hotpink"})
.title("Homeruns(Ruth,Mays,Bonds)")
.width(250)
.data(data)
.encode(
vl.x().fieldQ("yearID").axis({format:".0f",title:"year"}),
vl.y().fieldQ("HR").axis({title:"season homerun total"}),
vl.row().fieldN("playerID"),
vl.color().fieldN("playerID")
)
.resolve({scale:{x:"independent"}})
.render()
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