going to modify text elements. We can change the properties of all or particular text elements (here axis titles) by overwriting the default <code>element_text()</code> within the <code>theme()</code> call:</p>
<div class="sourceCode" id="cb54"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb54-1"><a href="working-with-axes.html#cb54-1" aria-hidden="true" tabindex="-1"></a><span class="fu">ggplot</span>(bikes, <span class="fu">aes</span>(<span class="at">x =</span> date, <span class="at">y 