pled cosine (full period)
Vector&lt;double&gt; x(cos(Range(0,15) * 2 * M_PI / 16.0));

// Create a new vector containing an approximation of the derivative
// of x.
Range I(1,15);
double delta = 1 / 16.;    // Spacing between samples
Vector&lt;double&gt; y = (x(I) - x(I-1)) / delta;
</pre>
</li>

</ul>



<a name="member">
<h2>Member functions</h2>

<ul>
<li>
<b>T_iterator      begin()</b>    ** NOT YET SUPPORTED<br><br>
Returns an STL-compliant iterator positioned at the beginning of the vector's
data.  T_