<code>v4</code> and <code>v6</code>
        </p>
        <br />
        <a class="btn btn-secondary btn-md text-uppercase" href="../line.html"
          >Lineplot section</a
        >
        <button
          class="btn btn-secondary btn-md text-uppercase"
          onclick="myCodeDownload('chart_example_from_d3-graph-gallery.html', 'code-html-v4', 'code-js-v4')"
        >
          Download code
        </button>
      </div>
    </header>

    <section class="bg" style="padding-top: 20px; padding-bottom: