Custom Tick Labels

Custom_Tick_labels.vl.json

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "description": "Google's stock price over time.",
  "width": 300,
  "height": 300,
  "data": {
    "values": [
      {"label": "A", "x": 0, "y": 420},
      {"label": "B", "x": 2, "y": 440},
      {"label": "C", "x": 5, "y": 430},
      {"label": "D", "x": 9, "y": 460},
      {"label": "A", "x": 10, "y": 470}
    ]
  },
  "layer": [
    {
      "mark": {"type": "text", "dy": 14},
      "encoding": {
        "x": {
          "field": "x",
          "type": "quantitative",
          "axis": {"labels": true, "ticks": true, "grid": false, "labelExpr": ""}
        },
        "y": {"value": 300},
        "text": {"field": "label"}
      }
    },
    {
      "mark": {"type": "line", "point": true},
      "encoding": {
        "x": {"field": "x", "type": "quantitative"},
        "y": {"field": "y", "type": "quantitative"}
      }
    }
  ]
}