n> <span class="va">Z</span><span class="op">$</span><span class="va">y</span><span class="op">*</span><span class="fl">180</span><span class="op">/</span><span class="va">pi</span></span></code></pre></div>
<p>Since the vale of <code>z</code> at <code>x = 0</code> and at
<code>x = 360</code> is the same, having both would be redundant and
also create bias when computing statistics because the same point would
be double counted. But when plotting, there’s a problem</p>
<div class="sourceCode" id="cb2"><pr