ic">Test if vector</span></p><p>
<span style="color:red">isvec</span>(<strong>v</strong>) is true (1) if the argument <strong>v</strong> is a 3-vector, else false (0).

</p>
<p>
<span style="color:red">isvec</span>(<strong>v</strong>, <strong>L</strong>) is true (1) if the argument <strong>v</strong> is a vector of length <strong>L</strong>,
either a row- or column-vector.  Otherwise false (0).

</p>
<h2>Notes</h2>
<ul>
  <li>Differs from MATLAB builtin function ISVECTOR, the latter returns true
for the cas