DS3/index_map.html at main · MHC-Datathon/DS3 · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Deck.gl + Google Maps + GeoJSON Gradient + Clock</title>
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="https://unpkg.com/deck.gl@9.0.0/dist.min.js"></script>
  <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyDku2ET0bzz5zPTAXNLUYMnjy9KZVd7B0o"></script>
  <style>
    body { margin: 0; padding: 0; }
    #map { width: 100%; height: 100vh; }

    /* Clock styling */
    #clock {
      position: absolute;
      top: 20px;
      left: 1100px;
      padding: 8px 12px;
      background: rgba(0, 0, 0, 0.6);
      color: #fff;
      font-family: sans-serif;
      font-size: 20px;
      border-radius: 6px;
      z-index: 10;
    }

    #legend {
        position: absolute;
        top: 60px; /* below the clock */
        left: 1100px;
        width: 200px;
        height: 20px;
        background: linear-gradient(to right, red, yellow, green);
        border-radius: 4px;
        z-index: 10;
        display: flex;
        justify-content: space-between;
        padding: 0 4px;
        color: white;
        font-family: sans-serif;
        font-size: 12px;
      }
      #legend span {
        position: relative;
        top: 24px; /* move label below the bar */
      }
  </style>
</head>
<body>
<div id="map"></div>
<div id="clock">Hour: 0</div> <!-- Clock element -->
<div id="legend"></div>

<script>
    const map = new google.maps.Map(document.getElementById("map"), {
        center: { lat: 40.85, lng: -73.83 },
        zoom: 14,
        styles: [
          { elementType: "geometry", stylers: [{ color: "#212121" }] },
          { elementType: "labels.icon", stylers: [{ visibility: "off" }] },
          { elementType: "labels.text.fill", stylers: [{ color: "#757575" }] },
          { elementType: "labels.text.stroke", stylers: [{ color: "#212121" }] },
          { featureType: "administrative", elementType: "geometry", stylers: [{ color: "#757575" }] },
          { featureType: "poi", elementType: "labels.text.fill", stylers: [{ color: "#757575" }] },
          { featureType: "road", elementType: "geometry", stylers: [{ color: "#383838" }] },
          { featureType: "road", elementType: "labels.text.fill", stylers: [{ color: "#8a8a8a" }] },
          { featureType: "road.arterial", elementType: "geometry", stylers: [{ color: "#404040" }] },
          { featureType: "road.highway", elementType: "geometry", stylers: [{ color: "#555555" }] },
          { featureType: "water", elementType: "geometry", stylers: [{ color: "#000000" }] }
        ]
    });

    fetch("data/processed/bx12_speeds_shapes_directions_agg.geojson")
      .then(response => response.json())
      .then(geojson => {
        const allData = geojson.features.map(f => ({
          path: f.geometry.coordinates,
          properties: f.properties
        }));

        // Compute min/max speeds for color gradient
        const speeds = allData.map(d => d.properties.speed);
        const minSpeed = Math.min(...speeds);
        const maxSpeed = Math.max(...speeds);
        const legendEl = document.getElementById("legend");
        legendEl.innerHTML = `<span>${minSpeed.toFixed(1)} mph</span><span>${maxSpeed.toFixed(1)} mph</span>`;
        const midSpeed = (minSpeed + maxSpeed) / 2;
        legendEl.innerHTML = `<span>${minSpeed.toFixed(1)}</span><span>${midSpeed.toFixed(1)}</span><span>${maxSpeed.toFixed(1)}</span>`;


        function lerp(a, b, t) { return a + (b - a) * t; }

        function getColorForSpeed(speed) {
          const t = (speed - minSpeed) / (maxSpeed - minSpeed);
          let r, g, b = 0;
          if (t < 0.5) { r = 255; g = Math.floor(lerp(0, 255, t*2)); }
          else { r = Math.floor(lerp(255, 0, (t-0.5)*2)); g = 255; }
          return [r, g, b, 200];
        }

        // Create the overlay initially with empty data
// Create the overlay initially with empty data
const overlay = new deck.GoogleMapsOverlay({
  layers: [
    new deck.PathLayer({
      id: "bus-routes",
      data: [],
      getPath: d => d.path,
      getColor: d => getColorForSpeed(d.properties.speed),
      getWidth: 5,
      widthUnits: "pixels",
      pickable: true
    })
  ],
  getTooltip: ({object}) => {
    if (!object) return null;
    const props = object.properties;
    return {
      text: `Route: ${props.route_id}\nSpeed: ${props.speed.toFixed(1)} mph\nHour: ${props.hour}`,
      style: {
        backgroundColor: "rgba(0, 0, 0, 0.8)",
        color: "white",
        fontSize: "12px",
        padding: "6px"
      }
    };
  }
});

        overlay.setMap(map);

        // Clock element
        const clockEl = document.getElementById("clock");

        // Animation
        let currentHour = 0;
        function animate() {
          const filteredData = allData.filter(d => d.properties.hour === currentHour);
          overlay.setProps({
            layers: [
              new deck.PathLayer({
                id: "bus-routes",
                data: filteredData,
                getPath: d => d.path,
                getColor: d => getColorForSpeed(d.properties.speed),
                getWidth: 5,
                widthUnits: "pixels",
                pickable: true
              })
            ]
          });

          // Update the clock
          clockEl.textContent = `Hour: ${currentHour}:00`;

          currentHour = (currentHour + 1) % 24; // loop 0-23
          setTimeout(animate, 300); // change hour every 5 seconds
        }

        animate();
      })
      .catch(err => console.error("Error loading JSON:", err));
</script>
</body>
</html>