st);

fig1=figure;
hold <span class="string">on</span>;
plot(xtest, mu,  <span class="string">'k-'</span>, <span class="string">'linewidth'</span>, 3, <span class="string">'displayname'</span>, <span class="string">'prediction'</span>);
<span class="comment">%plot(xtest, ytestNoisefree,  'b:', 'linewidth', 3, 'displayname', 'truth');</span>
plot(xtrain,ytrain,<span class="string">'ro'</span>,<span class="string">'markersize'</span>, 14, <span class="string">'linewidth'</span>, 3, <span class="keyword">...</