Single value chart

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/SingleValueChart",
  "title": "Single value chart",
  "description": "A chart that can render a single number.  This chart works with a single metric and no dimensions.",
  "type": "object",
  "properties": {
    "chart_title": {
      "description": "The title of the chart, which is displayed in the tile's header.",
      "type": "string",
      "nullable": false
    },
    "type": {
      "type": "string",
      "enum": [
        "single_value"
      ]
    },
    "decimal_points": {
      "description": "The number of figures to render after the decimal.  Most metrics only support up to 2 decimals, but some may support more.",
      "type": "number"
    }
  },
  "additionalProperties": false,
  "required": [
    "type"
  ]
}