{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "background": "white",
  "padding": 5,
  "height": 200,
  "style": "cell",
  "data": [
    {
      "name": "source_0",
      "url": "https://raw.githubusercontent.com/vega/vega-datasets/master/data/seattle-weather.csv",
      "format": {"type": "csv", "parse": {"date": "utc:'%Y-%m-%d'"}, "delimiter": ","},
      "transform": [
        {
          "field": "date",
          "type": "timeunit",
          "units": ["year"],
          "timezone": "utc",
          "as": ["year_date", "year_date_end"]
        },
        {
          "type": "aggregate",
          "groupby": ["year_date", "weather"],
          "ops": ["count"],
          "fields": [null],
          "as": ["__count"]
        },
        {
          "type": "stack",
          "groupby": ["year_date"],
          "field": "__count",
          "sort": {"field": ["weather"], "order": ["descending"]},
          "as": ["__count_start", "__count_end"],
          "offset": "zero"
        }
      ]
    }
  ],
  "signals": [
    {"name": "x_step", "value": 20},
    {
      "name": "width",
      "update": "bandspace(domain('x').length, 0.1, 0.05) * x_step"
    }
  ],
  "marks": [
    {
      "name": "marks",
      "type": "rect",
      "style": ["bar"],
      "from": {"data": "source_0"},
      "encode": {
        "update": {
          "fill": {"scale": "color", "field": "weather"},
          "ariaRoleDescription": {"value": "bar"},
          "description": {
            "signal": "\"Month of the year: \" + (timeFormat(datum[\"year_date\"], timeUnitSpecifier([\"year\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"}))) + \"; Count of Records: \" + (format(datum[\"__count\"], \"\")) + \"; Weather type: \" + (isValid(datum[\"weather\"]) ? datum[\"weather\"] : \"\"+datum[\"weather\"])"
          },
          "x": {"scale": "x", "field": "year_date"},
          "width": {"scale": "x", "band": 1},
          "y": {"scale": "y", "field": "__count_end"},
          "y2": {"scale": "y", "field": "__count_start"}
        }
      }
    }
  ],
  "scales": [
    {
      "name": "x",
      "type": "band",
      "domain": {"data": "source_0", "field": "utcyear_date", "sort": true},
      "range": {"step": {"signal": "x_step"}},
      "paddingInner": 0.1,
      "paddingOuter": 0.05
    },
    {
      "name": "y",
      "type": "linear",
      "domain": {
        "data": "source_0",
        "fields": ["__count_start", "__count_end"]
      },
      "range": [{"signal": "height"}, 0],
      "nice": true,
      "zero": true
    },
    {
      "name": "color",
      "type": "ordinal",
      "domain": ["sun", "fog", "drizzle", "rain", "snow"],
      "range": ["#e7ba52", "#c7c7c7", "#aec7e8", "#1f77b4", "#9467bd"]
    }
  ],
  "axes": [
    {
      "scale": "y",
      "orient": "left",
      "gridScale": "x",
      "grid": true,
      "tickCount": {"signal": "ceil(height/40)"},
      "domain": false,
      "labels": false,
      "aria": false,
      "maxExtent": 0,
      "minExtent": 0,
      "ticks": false,
      "zindex": 0
    },
    {
      "scale": "x",
      "orient": "bottom",
      "grid": false,
      "title": "Month of the year",
      "format": {
        "signal": "timeUnitSpecifier([\"year\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"})"
      },
      "formatType": "utc",
      "labelOverlap": true,
      "zindex": 0
    },
    {
      "scale": "y",
      "orient": "left",
      "grid": false,
      "title": "Count of Records",
      "labelOverlap": true,
      "tickCount": {"signal": "ceil(height/40)"},
      "zindex": 0
    }
  ],
  "legends": [
    {"title": "Weather type", "fill": "color", "symbolType": "square"}
  ]
}