StreamGraphDeneb.json

{
  "data": {"name": "dataset"},
 "mark": "area",  
  "encoding": {
    "x": {
      "timeUnit": "weekyear",
      "field": "Date",
      "title": null,
      "axis": {"domain": false, "format": "%b %Y", "tickSize": 0}
    },
    "y": {
      "aggregate": "sum", "field": "Total Area",
      "stack": "center",
      "axis": null
    },
   "order": {"field": "Drought Cat Order"},
    "color": {"field":"Drought Category", 
    "sort": {"field": "Drought Cat Order", "order": "ascending"},
    "scale":{"scheme": "pbiColorNominal"},
    "legend": {"description": "Legend showing the scale from none through exceptional drought",
    "direction": "horizontal", "orient": "top", "labelFontSize": 20,
    "titleFontSize": 20,
    "labelLimit": 1000 
    }
    }
  }
}