pan>
<a href="../pyspecdata.html#pyspecdata.nddata.add_noise" title="pyspecdata.nddata.add_noise" class="sphx-glr-backref-module-pyspecdata sphx-glr-backref-type-py-method"><span class="n">fake_data</span><span class="o">.</span><span class="n">add_noise</span></a><span class="p">(</span><span class="mf">5.0</span><span class="p">)</span>
<span class="c1"># }}}</span>
<span class="c1"># {{{ define the expression of the functional form once, and then use it</span>
<span class="c1">#     for both types of cla