"></a>Handling alpha</h2>

    <p>The <code>alpha</code> is a high-level plot attribute that sets the transparency of the glyph being plotted.</p><ul>
<li><p>When using a glyph that only has line properties, this will be the alpha of the line.</p></li>
<li><p>When using a glyph that has has line and fill properties, this will be the alpha of the line and the alpha of the fill will be set to 50% of this value.</p></li>
<li><p>Individual fill and line alpha can be specified with <code>fill_alpha</code> and <c