Colored Scatterplot

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Vega-Lite JSON Specification

{
  "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
  "description": "A scatterplot showing horsepower and miles per gallons.",
  "data": {"url": "data/cars.json"},
  "mark": "point",
  "encoding": {
    "x": {"field": "Horsepower", "type": "quantitative"},
    "y": {"field": "Miles_per_Gallon", "type": "quantitative"},
    "color": {"field": "Origin", "type": "nominal"},
    "shape": {"field": "Origin", "type": "nominal"}
  }
}