rceCode"><pre class="sourceCode r"><code><span><span class="va">nat_map16</span></span></code></pre></div>
    </div>

    <div id="format">
    <h2>Format</h2>
    <p>A data frame with the following variables:</p><ul><li><p>id: Numeric identifier for the polygon</p></li>
<li><p>long: longitude coordinate of point in polygon</p></li>
<li><p>lat: latitude coordinate of point in polygon</p></li>
<li><p>order: order for polygon points</p></li>
<li><p>hole: whether polygon has a hole</p></li>
<li><p>piece: piec