pan></span>
<span><span class="co">#&gt; Adding another scale for <span style="color: #00BB00;">x</span>, which will replace the existing scale.</span></span></code></pre></div>
<p><img src="plot_articles_files/figure-html/unnamed-chunk-3-1.png" width="700"></p>
</div>
<div class="section level3">
<h3 id="type-issues">3. type = “issues”<a class="anchor" aria-label="anchor" href="#type-issues"></a>
</h3>
<p>This type option shows the yearly evolution on proportions of special
issues, sections, topics and