{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "background": "white",
  "padding": 5,
  "data": [
    {
      "name": "year_store",
      "values": [
        {
          "unit": "concat_0",
          "fields": [{"type": "E", "field": "year"}],
          "values": [2000]
        }
      ]
    },
    {
      "name": "source_0",
      "url": "https://cdn.jsdelivr.net/npm/vega-datasets@v1.29.0/data/population.json",
      "format": {"type": "json"},
      "transform": [
        {
          "type": "filter",
          "expr": "!length(data(\"year_store\")) || vlSelectionTest(\"year_store\", datum)"
        },
        {
          "type": "formula",
          "expr": "if((datum.sex === 1),'Male','Female')",
          "as": "gender"
        }
      ]
    },
    {
      "name": "data_0",
      "source": "source_0",
      "transform": [
        {"type": "filter", "expr": "(datum.gender === 'Female')"},
        {
          "type": "aggregate",
          "groupby": ["age", "gender"],
          "ops": ["sum"],
          "fields": ["people"],
          "as": ["sum_people"]
        },
        {
          "type": "stack",
          "groupby": ["age"],
          "field": "sum_people",
          "sort": {"field": ["gender"], "order": ["ascending"]},
          "as": ["sum_people_start", "sum_people_end"],
          "offset": "zero"
        },
        {
          "type": "filter",
          "expr": "isValid(datum[\"sum_people\"]) && isFinite(+datum[\"sum_people\"])"
        }
      ]
    },
    {
      "name": "data_1",
      "source": "source_0",
      "transform": [
        {"type": "filter", "expr": "(datum.gender === 'Male')"},
        {
          "type": "aggregate",
          "groupby": ["age", "gender"],
          "ops": ["sum"],
          "fields": ["people"],
          "as": ["sum_people"]
        },
        {
          "type": "stack",
          "groupby": ["age"],
          "field": "sum_people",
          "sort": {"field": ["gender"], "order": ["ascending"]},
          "as": ["sum_people_start", "sum_people_end"],
          "offset": "zero"
        },
        {
          "type": "filter",
          "expr": "isValid(datum[\"sum_people\"]) && isFinite(+datum[\"sum_people\"])"
        }
      ]
    }
  ],
  "signals": [
    {"name": "concat_0_width", "value": 250},
    {"name": "concat_0_y_step", "value": 20},
    {
      "name": "concat_0_height",
      "update": "bandspace(domain('concat_0_y').length, 0.1, 0.05) * concat_0_y_step"
    },
    {"name": "concat_1_width", "value": 20},
    {"name": "concat_1_y_step", "value": 20},
    {
      "name": "concat_1_height",
      "update": "bandspace(domain('concat_1_y').length, 1, 0.5) * concat_1_y_step"
    },
    {"name": "concat_2_width", "value": 250},
    {"name": "concat_2_y_step", "value": 20},
    {
      "name": "concat_2_height",
      "update": "bandspace(domain('concat_2_y').length, 0.1, 0.05) * concat_2_y_step"
    },
    {
      "name": "unit",
      "value": {},
      "on": [
        {"events": "mousemove", "update": "isTuple(group()) ? group() : unit"}
      ]
    },
    {
      "name": "year_year",
      "init": "2000",
      "bind": {"input": "range", "max": 2000, "min": 1850, "step": 10}
    },
    {
      "name": "year",
      "update": "vlSelectionResolve(\"year_store\", \"union\", true, true)"
    }
  ],
  "layout": {"padding": 5, "bounds": "full", "align": "each"},
  "marks": [
    {
      "type": "group",
      "name": "concat_0_group",
      "title": {"text": "Female", "frame": "group"},
      "style": "cell",
      "encode": {
        "update": {
          "width": {"signal": "concat_0_width"},
          "height": {"signal": "concat_0_height"}
        }
      },
      "signals": [
        {
          "name": "year_tuple",
          "update": "year_year !== null ? {fields: year_tuple_fields, values: [year_year]} : null"
        },
        {
          "name": "year_tuple_fields",
          "value": [{"type": "E", "field": "year"}]
        },
        {
          "name": "year_modify",
          "on": [
            {
              "events": {"signal": "year_tuple"},
              "update": "modify(\"year_store\", year_tuple, true)"
            }
          ]
        }
      ],
      "marks": [
        {
          "name": "concat_0_marks",
          "type": "rect",
          "style": ["bar"],
          "interactive": true,
          "from": {"data": "data_0"},
          "encode": {
            "update": {
              "fill": {"scale": "color", "field": "gender"},
              "ariaRoleDescription": {"value": "bar"},
              "description": {
                "signal": "\"population: \" + (format(datum[\"sum_people\"], \"\")) + \"; age: \" + (isValid(datum[\"age\"]) ? datum[\"age\"] : \"\"+datum[\"age\"]) + \"; gender: \" + (isValid(datum[\"gender\"]) ? datum[\"gender\"] : \"\"+datum[\"gender\"])"
              },
              "x": {"scale": "concat_0_x", "field": "sum_people_end"},
              "x2": {"scale": "concat_0_x", "field": "sum_people_start"},
              "y": {"scale": "concat_0_y", "field": "age"},
              "height": {"signal": "max(0.25, bandwidth('concat_0_y'))"}
            }
          }
        }
      ],
      "axes": [
        {
          "scale": "concat_0_x",
          "orient": "bottom",
          "gridScale": "concat_0_y",
          "grid": true,
          "tickCount": {"signal": "ceil(concat_0_width/40)"},
          "domain": false,
          "labels": false,
          "aria": false,
          "maxExtent": 0,
          "minExtent": 0,
          "ticks": false,
          "zindex": 0
        },
        {
          "scale": "concat_0_x",
          "orient": "bottom",
          "grid": false,
          "title": "population",
          "labelFlush": true,
          "labelOverlap": true,
          "tickCount": {"signal": "ceil(concat_0_width/40)"},
          "zindex": 0
        }
      ]
    },
    {
      "type": "group",
      "name": "concat_1_group",
      "style": "cell",
      "encode": {
        "update": {
          "width": {"signal": "concat_1_width"},
          "height": {"signal": "concat_1_height"}
        }
      },
      "signals": [
        {
          "name": "year_tuple",
          "update": "year_year !== null ? {fields: year_tuple_fields, values: [year_year]} : null"
        },
        {
          "name": "year_tuple_fields",
          "value": [{"type": "E", "field": "year"}]
        },
        {
          "name": "year_modify",
          "on": [
            {
              "events": {"signal": "year_tuple"},
              "update": "modify(\"year_store\", year_tuple, true)"
            }
          ]
        }
      ],
      "marks": [
        {
          "name": "concat_1_marks",
          "type": "text",
          "style": ["text"],
          "interactive": true,
          "from": {"data": "source_0"},
          "encode": {
            "update": {
              "fill": {"value": "black"},
              "description": {
                "signal": "\"age: \" + (isValid(datum[\"age\"]) ? datum[\"age\"] : \"\"+datum[\"age\"])"
              },
              "x": {"signal": "concat_1_width", "mult": 0.5},
              "y": {"scale": "concat_1_y", "field": "age"},
              "text": {"signal": "format(datum[\"age\"], \"\")"},
              "align": {"value": "center"},
              "baseline": {"value": "middle"}
            }
          }
        }
      ]
    },
    {
      "type": "group",
      "name": "concat_2_group",
      "title": {"text": "Male", "frame": "group"},
      "style": "cell",
      "encode": {
        "update": {
          "width": {"signal": "concat_2_width"},
          "height": {"signal": "concat_2_height"}
        }
      },
      "signals": [
        {
          "name": "year_tuple",
          "update": "year_year !== null ? {fields: year_tuple_fields, values: [year_year]} : null"
        },
        {
          "name": "year_tuple_fields",
          "value": [{"type": "E", "field": "year"}]
        },
        {
          "name": "year_modify",
          "on": [
            {
              "events": {"signal": "year_tuple"},
              "update": "modify(\"year_store\", year_tuple, true)"
            }
          ]
        }
      ],
      "marks": [
        {
          "name": "concat_2_marks",
          "type": "rect",
          "style": ["bar"],
          "interactive": true,
          "from": {"data": "data_1"},
          "encode": {
            "update": {
              "fill": {"scale": "color", "field": "gender"},
              "ariaRoleDescription": {"value": "bar"},
              "description": {
                "signal": "\"population: \" + (format(datum[\"sum_people\"], \"\")) + \"; age: \" + (isValid(datum[\"age\"]) ? datum[\"age\"] : \"\"+datum[\"age\"]) + \"; gender: \" + (isValid(datum[\"gender\"]) ? datum[\"gender\"] : \"\"+datum[\"gender\"])"
              },
              "x": {"scale": "concat_2_x", "field": "sum_people_end"},
              "x2": {"scale": "concat_2_x", "field": "sum_people_start"},
              "y": {"scale": "concat_2_y", "field": "age"},
              "height": {"signal": "max(0.25, bandwidth('concat_2_y'))"}
            }
          }
        }
      ],
      "axes": [
        {
          "scale": "concat_2_x",
          "orient": "bottom",
          "gridScale": "concat_2_y",
          "grid": true,
          "tickCount": {"signal": "ceil(concat_2_width/40)"},
          "domain": false,
          "labels": false,
          "aria": false,
          "maxExtent": 0,
          "minExtent": 0,
          "ticks": false,
          "zindex": 0
        },
        {
          "scale": "concat_2_x",
          "orient": "bottom",
          "grid": false,
          "title": "population",
          "labelFlush": true,
          "labelOverlap": true,
          "tickCount": {"signal": "ceil(concat_2_width/40)"},
          "zindex": 0
        }
      ]
    }
  ],
  "scales": [
    {
      "name": "color",
      "type": "ordinal",
      "domain": ["Male", "Female"],
      "range": ["#1f77b4", "#e377c2"]
    },
    {
      "name": "concat_0_x",
      "type": "linear",
      "domain": {
        "data": "data_0",
        "fields": ["sum_people_start", "sum_people_end"]
      },
      "range": [0, {"signal": "concat_0_width"}],
      "reverse": true,
      "nice": true,
      "zero": true
    },
    {
      "name": "concat_0_y",
      "type": "band",
      "domain": {"data": "data_0", "field": "age", "sort": true},
      "range": {"step": {"signal": "concat_0_y_step"}},
      "paddingInner": 0.1,
      "paddingOuter": 0.05
    },
    {
      "name": "concat_1_y",
      "type": "point",
      "domain": {"data": "source_0", "field": "age", "sort": true},
      "range": {"step": {"signal": "concat_1_y_step"}},
      "padding": 0.5
    },
    {
      "name": "concat_2_x",
      "type": "linear",
      "domain": {
        "data": "data_1",
        "fields": ["sum_people_start", "sum_people_end"]
      },
      "range": [0, {"signal": "concat_2_width"}],
      "nice": true,
      "zero": true
    },
    {
      "name": "concat_2_y",
      "type": "band",
      "domain": {"data": "data_1", "field": "age", "sort": true},
      "range": {"step": {"signal": "concat_2_y_step"}},
      "paddingInner": 0.1,
      "paddingOuter": 0.05
    }
  ]
}