en GDP per capita and life expectancy.</p>
<div class="sourceCode" id="cb4"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="co"># Setup specifications with customized functions</span></span>
<span><span class="va">specs</span> <span class="op">&lt;-</span> <span class="fu"><a href="../reference/setup.html">setup</a></span><span class="op">(</span>data <span class="op">=</span> <span class="va">gapminder</span>,</span>
<span>                y <span class="op">=</span> <span c