{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://github.com/vitessce/vitessce/#clusters",
  "title": "Vitessce cluster data",
  "type": "object",
  "definitions": {
    "stringArray": {
      "type": "array",
      "items": { "type": "string" }
    },
    "matrix": {
      "type": "array",
      "items": {
        "type": "array",
        "items": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        }
      }
    }
  },
  "additionalProperties": false,
  "required": ["rows", "cols", "matrix"],
  "properties": {
    "rows": { "$ref": "#/definitions/stringArray" },
    "cols": { "$ref": "#/definitions/stringArray" },
    "matrix": { "$ref": "#/definitions/matrix" }
  }
}