e><a class="anchor" aria-label="anchor" href="#the-lvec"></a>
</h2>
<p>Selecting a sensible sequence of scales (i.e., the length vector
<code>lvec</code>) is critical and should be the same when comparing
surfaces and objects. The <code>lvec</code> should range between the
resolution and extent of the surface or mesh, or across a range of
scales relevant to the question being address. If you do not enter an
<code>lvec</code>, each function will estimate one for you based on some
rules of thumb for that part