h in this case is set to 3. The covariance
 function takes two
hyperparameters, a characteristic length-scale <tt>ell</tt> and the
standard deviation of the signal <tt>sf</tt>. Note, that these
positive parameters are represented in <tt>hyp.cov</tt> using their
logarithms. For more
information on covariance functions see <a
 href="../covFunctions.m">covFunctions</a> and <a
 href="../cov">cov/</a>.</p>

<p>Finally, the <b>likelihood function</b> is specified to be
Gaussian. The standard deviation of the nois