h="get-started.html"><a href="get-started.html#preparation"><i class="fa fa-check"></i><b>3.2.5</b> Data preparation</a></li>
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<li class="chapter" data-level="4" data-path="a-walk-through-example.html"><a href="a-walk-through-example.html"><i class="fa fa-check"></i><b>4</b> A Walk-through Example</a>
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<li class="chapter" data-level="4.1" data-path="a-walk-through-example.html"><a href="a-walk-through-example.html#prep-ggplot"><i class="fa fa-check"></i><b>4.1</b> Prerequisites</a><