o this heading">¶</a></h1>
<span class="target" id="nddata-summary-label"></span><p>(This is an introduction.  For detailed info, see <a class="reference internal" href="pyspecdata.html#pyspecdata.nddata" title="pyspecdata.nddata"><code class="xref py py-class docutils literal notranslate"><span class="pre">API</span> <span class="pre">documentation</span></code></a>.)</p>
<p>The nddata class is built on top of <a class="reference external" href="http://numpy.org">numpy</a>.
Numpy allows you to create mult