LAHMP/get-map.html at main · daimpad/LAHMP · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>LAHMP — EFG Map Explorer</title>

  <!-- Leaflet -->
  <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
  <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>

  <!-- Google Fonts (IUCN brand) -->
  <link rel="preconnect" href="https://fonts.googleapis.com" />
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
  <link href="https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;600&family=IBM+Plex+Sans:wght@400;600&family=IBM+Plex+Serif:wght@400;600&display=swap" rel="stylesheet" />

  <style>
    /* ── IUCN brand tokens ───────────────────────────── */
    :root {
      --navy:   #003478;
      --yellow: #FDC82F;
      --green:  #1A7A52;
      --light:  #f4f6f8;
      --border: #d0d7de;
      --text:   #1a1a2e;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }

    body {
      font-family: 'IBM Plex Sans', sans-serif;
      background: var(--light);
      color: var(--text);
      display: flex;
      flex-direction: column;
      height: 100vh;
      overflow: hidden;
    }

    /* ── Header ─────────────────────────────────────── */
    header {
      background: var(--navy);
      color: #fff;
      padding: 12px 20px;
      display: flex;
      align-items: center;
      gap: 14px;
      flex-shrink: 0;
      z-index: 1000;
    }
    header h1 {
      font-family: 'IBM Plex Serif', serif;
      font-size: 1.1rem;
      font-weight: 600;
    }
    header span.sub {
      font-size: 0.8rem;
      opacity: 0.7;
      margin-left: 4px;
    }
    .badge-iucn {
      background: var(--yellow);
      color: var(--navy);
      font-size: 0.7rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 3px;
      letter-spacing: 0.04em;
      margin-left: auto;
      white-space: nowrap;
    }

    /* ── Layout ──────────────────────────────────────── */
    .layout {
      display: flex;
      flex: 1;
      overflow: hidden;
    }

    /* ── Map ─────────────────────────────────────────── */
    #map {
      flex: 1;
      cursor: crosshair;
    }

    /* ── Sidebar ─────────────────────────────────────── */
    #sidebar {
      width: 340px;
      flex-shrink: 0;
      background: #fff;
      border-left: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      overflow: hidden;
    }

    .sidebar-header {
      background: var(--navy);
      color: #fff;
      padding: 14px 16px;
      font-family: 'IBM Plex Serif', serif;
      font-size: 0.95rem;
      font-weight: 600;
      flex-shrink: 0;
    }
    .sidebar-header .coords {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 0.75rem;
      color: var(--yellow);
      margin-top: 3px;
    }

    .sidebar-body {
      flex: 1;
      overflow-y: auto;
      padding: 12px;
    }

    /* ── Placeholder ─────────────────────────────────── */
    .placeholder {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      height: 100%;
      color: #888;
      text-align: center;
      padding: 24px;
      gap: 10px;
    }
    .placeholder svg {
      opacity: 0.3;
    }
    .placeholder p {
      font-size: 0.88rem;
      line-height: 1.5;
    }

    /* ── Loading ─────────────────────────────────────── */
    #loading-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,52,120,0.92);
      color: #fff;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      z-index: 9999;
      gap: 16px;
      font-family: 'IBM Plex Sans', sans-serif;
    }
    #loading-overlay p { font-size: 1rem; opacity: 0.85; }
    .spinner {
      width: 40px; height: 40px;
      border: 4px solid rgba(255,255,255,0.3);
      border-top-color: var(--yellow);
      border-radius: 50%;
      animation: spin 0.8s linear infinite;
    }
    @keyframes spin { to { transform: rotate(360deg); } }

    /* ── EFG cards ───────────────────────────────────── */
    .efg-count {
      font-size: 0.78rem;
      color: #555;
      margin-bottom: 10px;
      padding-bottom: 8px;
      border-bottom: 1px solid var(--border);
    }
    .efg-count strong { color: var(--navy); }

    .efg-group { margin-bottom: 14px; }
    .efg-group-label {
      font-size: 0.7rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: #888;
      margin-bottom: 5px;
      padding-left: 2px;
    }

    .efg-card {
      background: var(--light);
      border: 1px solid var(--border);
      border-left: 3px solid var(--navy);
      border-radius: 4px;
      padding: 8px 10px;
      margin-bottom: 5px;
    }
    .efg-card .code {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--navy);
    }
    .efg-card .name {
      font-size: 0.82rem;
      color: #333;
      margin-top: 1px;
    }

    /* Colour by realm */
    .efg-card.realm-T  { border-left-color: var(--green); }
    .efg-card.realm-F  { border-left-color: #2980b9; }
    .efg-card.realm-M  { border-left-color: #1a5276; }
    .efg-card.realm-MF { border-left-color: #148f77; }
    .efg-card.realm-TF { border-left-color: #7d6608; }
    .efg-card.realm-MT { border-left-color: #6c3483; }
    .efg-card.realm-FM { border-left-color: #1a5276; }
    .efg-card.realm-S  { border-left-color: #784212; }
    .efg-card.realm-SF { border-left-color: #4a235a; }
    .efg-card.realm-SM { border-left-color: #1b4f72; }

    /* ── Cell highlight ──────────────────────────────── */
    .cell-info {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 0.72rem;
      color: #666;
      margin-top: 10px;
      padding-top: 8px;
      border-top: 1px solid var(--border);
    }

    /* ── Responsive: stack on narrow screens ─────────── */
    @media (max-width: 600px) {
      .layout { flex-direction: column; }
      #sidebar { width: 100%; height: 40vh; border-left: none; border-top: 1px solid var(--border); }
    }
  </style>
</head>
<body>

<!-- Loading overlay -->
<div id="loading-overlay">
  <div class="spinner"></div>
  <p>Loading EFG grid data…</p>
</div>

<header>
  <h1>LAHMP EFG Map Explorer <span class="sub">— IUCN Global Ecosystem Typology</span></h1>
  <span class="badge-iucn">IUCN NBS Hub</span>
</header>

<div class="layout">
  <div id="map"></div>

  <div id="sidebar">
    <div class="sidebar-header">
      Ecosystem Functional Groups
      <div class="coords" id="coords-display">Click on the map to explore</div>
    </div>
    <div class="sidebar-body" id="sidebar-body">
      <div class="placeholder">
        <svg width="48" height="48" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5">
          <path d="M12 2C8.13 2 5 5.13 5 9c0 5.25 7 13 7 13s7-7.75 7-13c0-3.87-3.13-7-7-7z"/>
          <circle cx="12" cy="9" r="2.5"/>
        </svg>
        <p>Click anywhere on the map to see which IUCN Ecosystem Functional Groups are mapped to that 0.5° grid cell.</p>
      </div>
    </div>
  </div>
</div>

<script>
// ── State ─────────────────────────────────────────────────────────────────
let metadata = null;
let gridIndex = null;
let clickMarker = null;
let clickRect = null;

// ── Realm labels ──────────────────────────────────────────────────────────
const REALM_LABELS = {
  T:   'Terrestrial',
  F:   'Freshwater',
  M:   'Marine',
  MFT: 'Marine-Freshwater-Terrestrial',
  MT:  'Marine-Terrestrial',
  FM:  'Freshwater-Marine',
  TF:  'Terrestrial-Freshwater',
  SF:  'Subterranean-Freshwater',
  SM:  'Subterranean-Marine',
  S:   'Subterranean',
};

function getRealm(code) {
  // Codes like F1.1, T7.2, MFT1.1, MT1.2, TF1.3 etc.
  return code.match(/^([A-Z]+)/)[1];
}

function getRealmClass(realm) {
  if (realm === 'MFT') return 'realm-MF';
  return 'realm-' + realm;
}

// ── Grid key formula ──────────────────────────────────────────────────────
// From metadata: lng_min=-180, lat_min=-90, grid_res=0.5, cols=720, rows=360
// Rows go bottom-to-top (south to north)
function lngLatToKey(lng, lat) {
  const col = Math.floor((lng + 180) / 0.5);
  const row = Math.floor((lat + 90) / 0.5);
  return row * 720 + col;
}

// ── Map init ──────────────────────────────────────────────────────────────
const map = L.map('map', {
  center: [20, 10],
  zoom: 3,
  minZoom: 2,
  maxBounds: [[-90, -180], [90, 180]],
  maxBoundsViscosity: 1.0,
});

L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
  attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
  maxZoom: 18,
}).addTo(map);

// ── Click handler ─────────────────────────────────────────────────────────
map.on('click', function (e) {
  if (!gridIndex || !metadata) return;

  const { lat, lng } = e.latlng;
  const clampedLng = Math.max(-180, Math.min(179.99, lng));
  const clampedLat = Math.max(-90,  Math.min(89.99,  lat));

  const key = lngLatToKey(clampedLng, clampedLat);
  const indices = gridIndex[String(key)] || [];
  const efgCodes = indices.map(i => metadata.efg_list[i]);

  // Update coords display
  document.getElementById('coords-display').textContent =
    `${clampedLat.toFixed(2)}°, ${clampedLng.toFixed(2)}°`;

  // Draw cell rectangle
  const cellLngMin = Math.floor(clampedLng / 0.5) * 0.5;
  const cellLatMin = Math.floor(clampedLat / 0.5) * 0.5;
  if (clickRect) map.removeLayer(clickRect);
  clickRect = L.rectangle(
    [[cellLatMin, cellLngMin], [cellLatMin + 0.5, cellLngMin + 0.5]],
    { color: '#FDC82F', weight: 2, fillColor: '#FDC82F', fillOpacity: 0.15 }
  ).addTo(map);

  renderSidebar(efgCodes, key);
});

// ── Sidebar renderer ──────────────────────────────────────────────────────
function renderSidebar(codes, key) {
  const body = document.getElementById('sidebar-body');

  if (codes.length === 0) {
    body.innerHTML = `
      <div class="placeholder">
        <p>No EFGs mapped to this cell (key&nbsp;${key}).<br>
           This may be open ocean or an unclassified area.</p>
      </div>`;
    return;
  }

  // Group by realm
  const groups = {};
  codes.forEach(code => {
    const realm = getRealm(code);
    if (!groups[realm]) groups[realm] = [];
    groups[realm].push(code);
  });

  // Realm display order
  const ORDER = ['T', 'TF', 'F', 'MFT', 'MT', 'FM', 'M', 'S', 'SF', 'SM'];
  const sorted = ORDER.filter(r => groups[r]).concat(
    Object.keys(groups).filter(r => !ORDER.includes(r)).sort()
  );

  let html = `<div class="efg-count"><strong>${codes.length}</strong> EFG${codes.length !== 1 ? 's' : ''} mapped to this cell</div>`;

  sorted.forEach(realm => {
    const label = REALM_LABELS[realm] || realm;
    html += `<div class="efg-group">
      <div class="efg-group-label">${label}</div>`;
    groups[realm].sort().forEach(code => {
      const efg = metadata.efgs[code];
      const name = efg ? efg.name : code;
      html += `<div class="efg-card ${getRealmClass(realm)}">
        <div class="code">${code}</div>
        <div class="name">${name}</div>
      </div>`;
    });
    html += `</div>`;
  });

  html += `<div class="cell-info">Grid key: ${key}</div>`;
  body.innerHTML = html;
}

// ── Data loading ──────────────────────────────────────────────────────────
async function loadData() {
  try {
    const [metaRes, gridRes] = await Promise.all([
      fetch('data/metadata.json'),
      fetch('data/grid_index.json'),
    ]);

    if (!metaRes.ok) throw new Error(`metadata.json: ${metaRes.status}`);
    if (!gridRes.ok) throw new Error(`grid_index.json: ${gridRes.status}`);

    metadata = await metaRes.json();
    gridIndex = await gridRes.json();

    document.getElementById('loading-overlay').style.display = 'none';
  } catch (err) {
    document.getElementById('loading-overlay').innerHTML =
      `<p style="color:#FDC82F;font-size:1.1rem;">Failed to load data</p>
       <p style="opacity:0.8;font-size:0.85rem;">${err.message}</p>
       <p style="opacity:0.6;font-size:0.8rem;">Serve this file via a local web server (e.g. <code>python -m http.server 8080</code>)</p>`;
  }
}

loadData();
</script>
</body>
</html>