日本の人口統計（1920～2024）

Plot.plot({
  style: "overflow: visible;",
  y: {grid: true, transform: (f) => Math.log10(f)},
  marks: [
    Plot.ruleY([0]),
    Plot.lineY(d_pop, {x: "year", y: "value", stroke: "prefectures", tip: "x"}),
    Plot.text(d_pop, Plot.selectLast({x: "year", y: "value", z: "prefectures", text: "prefectures", textAnchor: "start", dx: 2}))
  ],
  caption: "日本の人口の推移（対数変換、1920～2024年）",
})

Plot.plot({
  marginBottom: 60,
  x: {
    tickRotate: -90,
  },
  y: {
    grid: true,
  },
  marks: [
    Plot.ruleY([0]),
    Plot.barY(d_pop_year, {x: "prefectures", y: "value", sort: {x: "y", reverse: true},
    fill: "steelblue", tip: "x"})
  ],
  caption: caption_pop,
})

Plot.plot({
  marginBottom: 60,
  x: {
    tickRotate: -90,
  },
  y: {
    grid: true,
  },
  marks: [
    Plot.ruleY([0]),
    Plot.barY(d_sex_year, {x: "prefectures", y: "value", sort: {x: "y", reverse: true},
    fill: "steelblue", tip: "x"})
  ],
  caption: caption_sex,
})

Plot.plot({
  marginBottom: 60,
  x: {
    tickRotate: -90,
  },
  y: {
    grid: true,
  },
  marks: [
    Plot.ruleY([0]),
    Plot.barY(d_sex_ratio, {x: "prefectures", y: "value", sort: {x: "y", reverse: true},
    fill: "steelblue", tip: "x"})
  ],
  caption: "性別人口比（男性/女性）",
})

Plot.plot({
  marginBottom: 60,
  x: {
    tickRotate: -90,
  },
  y: {
    grid: true,
    labelAnchor: "center",
  },
  color: {
    scheme: "PiYG",
    type: "ordinal"
  },
  marks: [
    Plot.ruleY([0]),
    Plot.barY(d_pinc_year, {x: "prefectures", y: "value", 
      fill: (d) => d.value > 0, sort: {x: "y", reverse: true}, tip: "x"})
  ],
  caption: caption_pinc,
})

Plot.plot({
  marks: [
    Plot.geo(
      prefectures,
      {fill: (d) => d_pop_map.get(d.properties.name)}
    ),
    Plot.tip(prefectures, Plot.pointer(Plot.geoCentroid({title: (d) => d.properties.name})))
  ],
    caption: caption_pop,
    color: {
    scheme: "spectral",
    unknown: "#ddd",
    type: "linear", 
    legend: true,
    label: legend_text_pop,
    domain: [0, 13000],
  }
})

選択した県・年の統計データ

人口（千人）

d_pop_pref[0].value

性別人口（千人）

d_sex_pref[0].value

人口増加率

d_pinc_pref[0].value

Plot.plot({
  marks: [
    Plot.geo(
      prefectures,
      {fill: (d) => d_sex_map.get(d.properties.name)}
    ),
    Plot.tip(prefectures, Plot.pointer(Plot.geoCentroid({title: (d) => d.properties.name})))
  ],
    caption: caption_sex,
    color: {
    scheme: "spectral",
    unknown: "#ddd",
    type: "linear", 
    legend: true,
    label: legend_text_sex,
    domain: [0, 6500],
  }
})

Plot.plot({
  marks: [
    Plot.geo(
      prefectures,
      {fill: (d) => d_pinc_map.get(d.properties.name)}
    ),
    Plot.tip(prefectures, Plot.pointer(Plot.geoCentroid({title: (d) => d.properties.name})))
  ],
    caption: caption_pinc,
    color: {
    scheme: "spectral",
    unknown: "#ddd",
    type: "linear", 
    legend: true,
    label: legend_text_pinc,
  }
})

d_pop = FileAttachment("d_pop_24.csv").csv({ typed: true })
d_sex = FileAttachment("d_sex_24.csv").csv({ typed: true })
d_pinc = FileAttachment("d_pinc_24.csv").csv({ typed: true })