Trellis Scatter Plot

{
  "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
  "data": {"url": "data/movies.json"},
  "mark": "point",
  "encoding": {
    "column": {"field": "MPAA_Rating","type": "ordinal"},
    "x": {"field": "Worldwide_Gross","type": "quantitative"},
    "y": {"field": "US_DVD_Sales","type": "quantitative"}
  }
}