) IRIS FITS file(s).</p></li>
<li><p><strong>line</strong> (<em>string</em>) – Line to select: this can be any unique abbreviation of the line name (e.g. “Mg”). For non-unique abbreviations, an error is thrown.</p></li>
<li><p><strong>keep_null</strong> (<em>boolean</em>) – Controls whether images that are NULL (-200) everywhere are removed from the data cube. keep_null=True keeps NULL images and keep_null=False removes them.</p></li>
</ul>
</dd>
<dt class="field-even">Variables</dt>
<dd class="fiel