Label: "shape.yvals" -->
<dd>
<p>returns an array of y values.</p>
<pre>ShapeLib::Arc.new([1, 2], [3, 4], [5, 6]).xvals
=&gt; [2.0, 4.0, 6.0]</pre></dd>
<dt><a name="label-49" id="label-49"><code>shape.mvals</code></a></dt><!-- RDLabel: "shape.mvals" -->
<dd>
<p>returns an array of m values. Nil is returned for missing value.</p>
<pre>ShapeLib::Arc.new([1, 2], [3, 4], [5, 6]).mvals
=&gt; [nil, nil, nil]
ShapeLib::ArcM.new([1, 2, 3], [4, 5, 6], [7, 8, 9]).mvals
=&gt; [3, 6, 9]</pre></dd>
<dt><a name="label-5