Biology — Chart: Sizes of Cells

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "description": "Approximate sizes (micrometres)",
  "data": {"values": [
    {"item": "Virus", "um": 0.1},
    {"item": "Bacterium", "um": 2},
    {"item": "Red blood cell", "um": 8},
    {"item": "Animal cell", "um": 20},
    {"item": "Plant cell", "um": 50},
    {"item": "Frog egg", "um": 1000}
  ]},
  "mark": "bar",
  "encoding": {
    "y": {"field": "item", "type": "nominal", "sort": "-x", "title": "Object"},
    "x": {"field": "um", "type": "quantitative", "scale": {"type": "log"}, "title": "size (um, log)"},
    "color": {"field": "item", "type": "nominal", "legend": null}
  }
}