waterlevel_fukui/graph.html at main · code4fukui/waterlevel_fukui · GitHub

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<!DOCTYPE html><html lang="ja"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width">
</head><body>
<script type="module">
import { h1, add, link } from "https://js.sabae.cc/stdom.js";
import { CSVMap } from "https://code4fukui.github.io/csv-map/csv-map.js";
import { CSV } from "https://js.sabae.cc/CSV.js";
import { QRCode } from "https://code4fukui.github.io/qr-code/qr-code.js";
import { Day } from "https://code4fukui.github.io/day-es/Day.js";
import { getCurrentPosition } from "https://js.sabae.cc/getCurrentPosition.js";
import { Geo3x3 } from "https://geo3x3.com/Geo3x3.js";
import { sleep } from "https://js.sabae.cc/sleep.js";

class WaterLevelMap extends CSVMap {
  constructor() {
    super();
  }
  async bindPopup(d, marker) {
    const sensors = this.data.filter(s => s.geo3x3 == d.geo3x3);
    if (sensors.length <= 1) {
      return super.bindPopup(d, marker);
    }
    const popup = sensors.map(s => `<div style="margin-bottom: 1em">${this.makeTable(s)}</div>`).join("");
    marker.bindPopup(popup, { maxHeight: 500 });
  }
  async getMarker(d, ll) {
    const toNumber = value => {
      const n = parseFloat(value);
      return Number.isFinite(n) ? n : null;
    };
    const waterLevel = toNumber(d['河川水位']) || 0;
    const levels = [
      ['はん濫危険水位', 'red'],
      ['避難判断水位', 'orange'],
      ['はん濫注意水位', '#ffd700'],
      ['水防団待機水位', '#7ac943'],
    ].map(([name, color]) => ({ name, color, value: toNumber(d[name]) }));
    const graphMax = Math.max(waterLevel, ...levels.map(level => level.value || 0), 1);

    const levelMarkers = [];
    for (const level of levels) {
      if (level.value == null) {
        continue;
      }
      const y = ll[0] + level.value / graphMax * 0.01;
      const marker = L.polyline([
        [y, ll[1] - 0.01],
        [y, ll[1] + 0.01],
      ], { color: level.color, weight: 3 });
      levelMarkers.push(marker);
    }
    const marker = L.polygon([
      [ll[0] + 0.01, ll[1] - 0.01],
      [ll[0],        ll[1] - 0.01],
      [ll[0],        ll[1] + 0.01],
      [ll[0] + 0.01, ll[1] + 0.01],
    ], { color: "gray", fillColor: "gray", stroke: false });

    const samples = d.waterLevelHistory || [];
    const startTime = samples[0]?.time;
    const elapsedTime = samples.at(-1)?.time - startTime;
    const pnt = [];
    pnt.push([ll[0], ll[1] - 0.01]);
    if (samples.length > 1) {
      for (let i = 0; i < samples.length; i++) {
        const r = samples[i].waterLevel / graphMax * 0.01;
        const timeRatio = elapsedTime > 0
          ? (samples[i].time - startTime) / elapsedTime
          : i / (samples.length - 1);
        pnt.push([ll[0] + r, ll[1] - 0.01 + 0.02 * timeRatio]);
      }
    } else {
      const r = (samples[0]?.waterLevel || 0) / graphMax * 0.01;
      pnt.push([ll[0] + r, ll[1] - 0.01]);
      pnt.push([ll[0] + r, ll[1] - 0.01 + 0.02]);
    }
    pnt.push([ll[0], ll[1] + 0.01]);
    const marker2 = L.polygon(pnt, { color: "blue", fillColor: "blue" });
    return L.featureGroup([marker, marker2, ...levelMarkers]);
  }
}

customElements.define("waterlever-map", WaterLevelMap);

onload = async () => {
  document.body.style.textAlign = "center";

  h1("福井県河川水位計マップ");

  const map = new WaterLevelMap();
  document.body.appendChild(map);
  await sleep(10);

  const legend = document.createElement("div");
  legend.style.margin = "0.7em";
  legend.innerHTML = [
    ["red", "はん濫危険水位"],
    ["orange", "避難判断水位"],
    ["#ffd700", "はん濫注意水位"],
    ["#7ac943", "水防団待機水位"],
    ["blue", "河川水位の推移"],
  ].map(([color, label]) => `<span style="display:inline-block; margin:0 .7em .4em 0"><span style="display:inline-block; width:1.8em; border-top:3px solid ${color}; margin-right:.35em; vertical-align:middle"></span>${label}</span>`).join("");
  document.body.appendChild(legend);

  //const base = "https://code4fukui.github.io/waterlevel_fukui/";
  const base = "./";
  const sensors = CSV.toJSON(await CSV.fetch(base + "sensors.csv"));
  const data = CSV.toJSON(await CSV.fetch(base + "data/" + new Day().toString() + ".csv")).reverse();
  console.log(data, sensors);

  const getHistory = data => {
    return data.slice(0, 5).reverse().map(d => ({
      waterLevel: parseFloat(d.河川水位) || 0,
      time: new Date(d.日時).getTime(),
      label: d.河川水位 + "m(" + d.日時.substring(d.日時.length - 5) + ")",
    }));
  };
  sensors.forEach(s => {
    const d = data.find(d => d.id == s.id);
    const history = getHistory(data.filter(d => d.id == s.id));
    s.河川水位 = d.河川水位;
    s.水位の推移 = history.map(d => d.label).join(" → ");
    s.日時 = d.日時;
    Object.defineProperty(s, "waterLevelHistory", { value: history });
    delete s.日付;
  });
  map.value = sensors;

  const btn = document.createElement("button");
  btn.textContent = "現在位置付近を見る(GPS等使用)";
  btn.style.margin = "1em";
  btn.onclick = async () => {
    const pos = await getCurrentPosition();
    map.map.flyTo(new L.LatLng(pos.latitude, pos.longitude), 14);
  };
  document.body.appendChild(btn);
  add("br");

  link("川の防災情報 - 国土交通省", "https://www.river.go.jp/kawabou/mb?zm=11&clat=36.07241230197147&clon=136.13433837890628&fld=0&mapType=0&viewGrpStg=0&viewRd=1&viewRW=1&viewRl=1&viewRn=1&viewPoint=1&ext=0");
  link("気象庁 | 今後の雨（降水短時間予報）", "https://www.jma.go.jp/bosai/kaikotan/#zoom:9/lat:35.945771/lon:136.249695/colordepth:normal/elements:rasrf&slmcs");
  link("福井県の雨雲レーダー【予想60時間】 - ウェザーニュース", "https://weathernews.jp/onebox/radar/fukui/");
  add("br");

  link("DATA: CC BY 福井県河川水位オープンデータ", "https://github.com/code4fukui/waterlevel_fukui");
  link("水位計位置オープンデータ表示", "./");
  link("src on GitHub", "https://github.com/code4fukui/waterlevel_fukui");
  add("br");

  document.body.appendChild(new QRCode());

  // position hash
  if (document.location.hash.length > 1) {
    const geo3x3 = document.location.hash.substring(1);
    const pos = Geo3x3.decode(geo3x3);
    console.log(pos);
    await sleep(100);
    //map.map.setView([pos.lat, pos.lng], pos.level);
    map.map.flyTo(new L.LatLng(pos.lat, pos.lng), pos.level);
  }
  const setHash = () => {
    const ll = map.map.getCenter();
    const z = map.map.getZoom();
    //console.log(ll, z);
    const geo3x3 = Geo3x3.encode(ll.lat, ll.lng, z);
    document.location.hash = geo3x3;
  };
  map.map.on("moveend", setHash);
  map.map.on("zoomlevelschange", setHash);
};
</script>
</body>
</html>