City pulse ridgelines

<!-- Original layout, SVG/CSS artwork and JavaScript © 2026 XXC Templates. MIT License.
Illustrative sample content and data; no real accounts, purchases or bookings. -->
<main>
  <header class="intro">
    <div>
      <div class="kicker">DATA STORIES / SAMPLE DATA</div>
      <h1>City pulse ridgelines</h1>
      <p>
        Overlapping density curves compare simulated journey times across five districts. Shift
        between weekday and weekend distributions.
      </p>
    </div>
    <span class="badge">INTERACTIVE SVG</span>
  </header>
  <section class="panel">
    <svg
      id="chart"
      viewBox="0 0 700 300"
      role="img"
      aria-label="Ridgeline distributions of journey time"
    ></svg>
    <div class="toolbar">
      <button id="change">Compare weekend travel</button
      ><span class="badge">MINUTES / SIMULATED DISTRIBUTIONS</span>
    </div>
    <output id="status" class="status" aria-live="polite"></output>
    <details class="data-table">
      <summary>View data table</summary>
      <div class="table-scroll"><table id="data-table"></table></div>
    </details>
  </section>
  <footer>Illustrative data · no external services · keyboard-accessible controls</footer>
</main>

:root {
  --bg: #ede9df;
  --panel: #faf7ef;
  --text: #282d28;
  --muted: #62665d;
  --line: #cfcfc0;
  --accent: #597352;
}
/* Original XXC Templates Studio collection. MIT; sample data only. */
* {
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}
html {
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}
body {
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h2 {
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h3 {
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p {
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button,
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a {
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@media (max-width: 520px) {
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html {
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#chart {
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(() => {
  "use strict";
  const $ = (s) => document.querySelector(s),
    $$ = (s) => [...document.querySelectorAll(s)],
    status = (t) => {
      const el = $("#status");
      if (el) el.textContent = t;
    },
    clamp = (n, a, b) => Math.max(a, Math.min(b, n));
  const reduced = matchMedia("(prefers-reduced-motion: reduce)").matches;
  const ns = "http://www.w3.org/2000/svg";
  function svg(tag, attrs = {}, text) {
    const el = document.createElementNS(ns, tag);
    for (const [k, v] of Object.entries(attrs)) el.setAttribute(k, String(v));
    if (text !== undefined) el.textContent = text;
    return el;
  }
  function table(headers, rows) {
    const t = $("#data-table");
    if (!t) return;
    t.replaceChildren();
    const caption = document.createElement("caption");
    caption.textContent = "Illustrative sample data";
    t.append(caption);
    const head = t.createTHead().insertRow();
    headers.forEach((v) => {
      const th = document.createElement("th");
      th.scope = "col";
      th.textContent = v;
      head.append(th);
    });
    const body = t.createTBody();
    rows.forEach((row) => {
      const r = body.insertRow();
      row.forEach((v) => (r.insertCell().textContent = String(v)));
    });
  }
  function selectButtons(selector, callback) {
    $$(selector).forEach((b) =>
      b.addEventListener("click", () => {
        $$(selector).forEach((x) => x.setAttribute("aria-pressed", String(x === b)));
        callback(b);
      }),
    );
  }

  const colors = ["#82b6ff", "#72dbc2", "#c5a4ff", "#f7bf7c", "#fa92b8", "#acd884"];
  let weekend = false;
  const names = ["Canal", "Central", "North", "East", "Harbor"];
  function draw() {
    const s = $("#chart");
    s.replaceChildren();
    const rows = [];
    names.forEach((name, i) => {
      const mean = [18, 27, 34, 39, 48][i] - (weekend ? 6 : 0),
        spread = [5, 7, 8, 6, 10][i],
        y = 60 + i * 43;
      let d = "M95 " + y;
      for (let x = 0; x <= 600; x += 5) {
        const min = x / 10,
          height = Math.exp(-0.5 * Math.pow((min - mean) / spread, 2)) * 54;
        d += "L" + (95 + x) + " " + (y - height);
      }
      d += "L695 " + y + "Z";
      s.append(
        svg("path", {
          d,
          fill: colors[i],
          "fill-opacity": 0.55,
          stroke: colors[i],
          "stroke-width": 1.5,
        }),
      );
      s.append(svg("text", { x: 83, y: y - 5, "text-anchor": "end" }, name));
      rows.push([name, mean, spread]);
    });
    for (let n = 0; n <= 60; n += 10)
      s.append(svg("text", { x: 95 + n * 10, y: 282, "text-anchor": "middle" }, n));
    table(["District", "Mean minutes", "Standard deviation"], rows);
  }
  $("#change").addEventListener("click", () => {
    weekend = !weekend;
    draw();
    status(
      weekend
        ? "Weekend means are six minutes shorter in this illustrative model."
        : "Weekday distributions restored.",
    );
  });
  draw();
})();