{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "background": "white",
  "padding": 5,
  "title": {
    "text": "Daily Max Temperatures (C) in Seattle, WA",
    "frame": "group"
  },
  "style": "cell",
  "data": [
    {
      "name": "source_0",
      "url": "https://raw.githubusercontent.com/vega/vega-datasets/master/data/seattle-weather.csv",
      "format": {
        "type": "csv",
        "parse": {"date": "date", "temp_max": "number"},
        "delimiter": ","
      },
      "transform": [
        {
          "field": "date",
          "type": "timeunit",
          "units": ["date"],
          "as": ["date_date", "date_date_end"]
        },
        {
          "field": "date",
          "type": "timeunit",
          "units": ["month"],
          "as": ["month_date", "month_date_end"]
        },
        {
          "type": "aggregate",
          "groupby": ["date_date", "month_date"],
          "ops": ["max"],
          "fields": ["temp_max"],
          "as": ["max_temp_max"]
        },
        {
          "type": "filter",
          "expr": "isValid(datum[\"max_temp_max\"]) && isFinite(+datum[\"max_temp_max\"])"
        }
      ]
    }
  ],
  "signals": [
    {"name": "x_step", "value": 13},
    {"name": "width", "update": "bandspace(domain('x').length, 0, 0) * x_step"},
    {"name": "y_step", "value": 13},
    {"name": "height", "update": "bandspace(domain('y').length, 0, 0) * y_step"}
  ],
  "marks": [
    {
      "name": "marks",
      "type": "rect",
      "style": ["rect"],
      "from": {"data": "source_0"},
      "encode": {
        "update": {
          "fill": {"scale": "color", "field": "max_temp_max"},
          "description": {
            "signal": "\"Day: \" + (timeFormat(datum[\"date_date\"], '%e')) + \"; Month: \" + (timeFormat(datum[\"month_date\"], timeUnitSpecifier([\"month\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"}))) + \"; Max of temp_max: \" + (format(datum[\"max_temp_max\"], \"\"))"
          },
          "x": {"scale": "x", "field": "date_date"},
          "width": {"scale": "x", "band": 1},
          "y": {"scale": "y", "field": "month_date"},
          "height": {"scale": "y", "band": 1}
        }
      }
    }
  ],
  "scales": [
    {
      "name": "x",
      "type": "band",
      "domain": {"data": "source_0", "field": "date_date", "sort": true},
      "range": {"step": {"signal": "x_step"}},
      "paddingInner": 0,
      "paddingOuter": 0
    },
    {
      "name": "y",
      "type": "band",
      "domain": {"data": "source_0", "field": "month_date", "sort": true},
      "range": {"step": {"signal": "y_step"}},
      "paddingInner": 0,
      "paddingOuter": 0
    },
    {
      "name": "color",
      "type": "linear",
      "domain": {"data": "source_0", "field": "max_temp_max"},
      "range": "heatmap",
      "interpolate": "hcl",
      "zero": false
    }
  ],
  "axes": [
    {
      "scale": "x",
      "orient": "bottom",
      "grid": false,
      "title": "Day",
      "format": "%e",
      "labelAngle": 0,
      "formatType": "time",
      "labelBaseline": "top",
      "labelOverlap": true,
      "zindex": 1
    },
    {
      "scale": "y",
      "orient": "left",
      "grid": false,
      "title": "Month",
      "format": {
        "signal": "timeUnitSpecifier([\"month\"], {\"year-month\":\"%b %Y \",\"year-month-date\":\"%b %d, %Y \"})"
      },
      "formatType": "time",
      "labelOverlap": true,
      "zindex": 1
    }
  ],
  "legends": [
    {"fill": "color", "gradientLength": {"signal": "clamp(height, 64, 200)"}}
  ],
  "config": {"axis": {"domain": false}, "style": {"cell": {"strokeWidth": 0}}}
}