typology.json

{
  "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
  "description": "A bar chart showing the US population distribution of age groups in 2000.",
  "height": {"step": 17},
  "data": { "url": "data/population.json"},
  "transform": [{"filter": "datum.year == 2000"}],
  "mark": "bar",
  "encoding": {
    "y": {"field": "age"},
    "x": {
      "aggregate": "sum", "field": "people",
      "title": "population"
    }
  }
}