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<div class="section" id="wcsbase">
<h1>WCSBase<a class="headerlink" href="#wcsbase" title="Permalink to this headline">¶</a></h1>
<dl class="class">
<dt id="astropy.wcs.WCSBase">
<em class="property">class </em><tt class="descclassname">astropy.wcs.</tt><tt class="descname">WCSBase</tt><a class="headerlink" href="#astropy.wcs.WCSBase" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <tt class="xref py py-class docutils literal"><span class="pre">object</span></tt></p>
<p>Wcs objects amalgamate basic WCS (as provided by <a class="reference external" href="http://www.atnf.csiro.au/~mcalabre/WCS/">wcslib</a>), with
<a class="reference external" href="http://irsa.ipac.caltech.edu/data/SPITZER/docs/files/spitzer/shupeADASS.pdf">SIP</a> and <a class="reference external" href="http://www.atnf.csiro.au/people/mcalabre/WCS/index.html">Paper IV</a> distortion operations.</p>
<p>To perform all distortion corrections and WCS tranformation, use
<tt class="xref py py-obj docutils literal"><span class="pre">all_pix2world</span></tt>.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters :</th><td class="field-body"><p class="first"><strong>sip</strong> : <a class="reference internal" href="astropy.wcs.Sip.html#astropy.wcs.Sip" title="astropy.wcs.Sip"><tt class="xref py py-obj docutils literal"><span class="pre">Sip</span></tt></a> object or <tt class="xref py py-obj docutils literal"><span class="pre">None</span></tt></p>
<p><strong>cpdis</strong> : A pair of <a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a> objects, or</p>
<blockquote>
<div><p><tt class="docutils literal"><span class="pre">(None,</span> <span class="pre">None)</span></tt>.</p>
</div></blockquote>
<p><strong>wcsprm</strong> : <a class="reference internal" href="astropy.wcs.Wcsprm.html#astropy.wcs.Wcsprm" title="astropy.wcs.Wcsprm"><tt class="xref py py-obj docutils literal"><span class="pre">Wcsprm</span></tt></a> object</p>
<p><strong>det2im</strong> : A pair of <a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a> objects, or</p>
<blockquote class="last">
<div><p><tt class="docutils literal"><span class="pre">(None,</span> <span class="pre">None)</span></tt>.</p>
</div></blockquote>
</td>
</tr>
</tbody>
</table>
<p class="rubric">Attributes Summary</p>
<table border="1" class="longtable docutils">
<colgroup>
<col width="10%" />
<col width="90%" />
</colgroup>
<tbody valign="top">
<tr class="row-odd"><td><a class="reference internal" href="#astropy.wcs.WCSBase.cpdis1" title="astropy.wcs.WCSBase.cpdis1"><tt class="xref py py-obj docutils literal"><span class="pre">cpdis1</span></tt></a></td>
<td><a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a></td>
</tr>
<tr class="row-even"><td><a class="reference internal" href="#astropy.wcs.WCSBase.cpdis2" title="astropy.wcs.WCSBase.cpdis2"><tt class="xref py py-obj docutils literal"><span class="pre">cpdis2</span></tt></a></td>
<td><a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a></td>
</tr>
<tr class="row-odd"><td><a class="reference internal" href="#astropy.wcs.WCSBase.det2im1" title="astropy.wcs.WCSBase.det2im1"><tt class="xref py py-obj docutils literal"><span class="pre">det2im1</span></tt></a></td>
<td>A <a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a> object for detector to image plane correction in the <em>x</em>-axis.</td>
</tr>
<tr class="row-even"><td><a class="reference internal" href="#astropy.wcs.WCSBase.det2im2" title="astropy.wcs.WCSBase.det2im2"><tt class="xref py py-obj docutils literal"><span class="pre">det2im2</span></tt></a></td>
<td>A <a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a> object for detector to image plane correction in the <em>y</em>-axis.</td>
</tr>
<tr class="row-odd"><td><a class="reference internal" href="#astropy.wcs.WCSBase.sip" title="astropy.wcs.WCSBase.sip"><tt class="xref py py-obj docutils literal"><span class="pre">sip</span></tt></a></td>
<td>Get/set the <a class="reference internal" href="astropy.wcs.Sip.html#astropy.wcs.Sip" title="astropy.wcs.Sip"><tt class="xref py py-obj docutils literal"><span class="pre">Sip</span></tt></a> object for performing <a class="reference external" href="http://irsa.ipac.caltech.edu/data/SPITZER/docs/files/spitzer/shupeADASS.pdf">SIP</a> distortion correction.</td>
</tr>
<tr class="row-even"><td><a class="reference internal" href="#astropy.wcs.WCSBase.wcs" title="astropy.wcs.WCSBase.wcs"><tt class="xref py py-obj docutils literal"><span class="pre">wcs</span></tt></a></td>
<td>A <a class="reference internal" href="astropy.wcs.Wcsprm.html#astropy.wcs.Wcsprm" title="astropy.wcs.Wcsprm"><tt class="xref py py-obj docutils literal"><span class="pre">Wcsprm</span></tt></a> object to perform the basic <a class="reference external" href="http://www.atnf.csiro.au/~mcalabre/WCS/">wcslib</a> WCS transformation.</td>
</tr>
</tbody>
</table>
<p class="rubric">Attributes Documentation</p>
<dl class="attribute">
<dt id="astropy.wcs.WCSBase.cpdis1">
<tt class="descname">cpdis1</tt><a class="headerlink" href="#astropy.wcs.WCSBase.cpdis1" title="Permalink to this definition">¶</a></dt>
<dd><p><a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a></p>
<p>The pre-linear transformation distortion lookup table, <tt class="docutils literal"><span class="pre">CPDIS1</span></tt>.</p>
</dd></dl>
<dl class="attribute">
<dt id="astropy.wcs.WCSBase.cpdis2">
<tt class="descname">cpdis2</tt><a class="headerlink" href="#astropy.wcs.WCSBase.cpdis2" title="Permalink to this definition">¶</a></dt>
<dd><p><a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a></p>
<p>The pre-linear transformation distortion lookup table, <tt class="docutils literal"><span class="pre">CPDIS2</span></tt>.</p>
</dd></dl>
<dl class="attribute">
<dt id="astropy.wcs.WCSBase.det2im1">
<tt class="descname">det2im1</tt><a class="headerlink" href="#astropy.wcs.WCSBase.det2im1" title="Permalink to this definition">¶</a></dt>
<dd><p>A <a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a> object for detector to image plane
correction in the <em>x</em>-axis.</p>
</dd></dl>
<dl class="attribute">
<dt id="astropy.wcs.WCSBase.det2im2">
<tt class="descname">det2im2</tt><a class="headerlink" href="#astropy.wcs.WCSBase.det2im2" title="Permalink to this definition">¶</a></dt>
<dd><p>A <a class="reference internal" href="astropy.wcs.DistortionLookupTable.html#astropy.wcs.DistortionLookupTable" title="astropy.wcs.DistortionLookupTable"><tt class="xref py py-obj docutils literal"><span class="pre">DistortionLookupTable</span></tt></a> object for detector to image plane
correction in the <em>y</em>-axis.</p>
</dd></dl>
<dl class="attribute">
<dt id="astropy.wcs.WCSBase.sip">
<tt class="descname">sip</tt><a class="headerlink" href="#astropy.wcs.WCSBase.sip" title="Permalink to this definition">¶</a></dt>
<dd><p>Get/set the <a class="reference internal" href="astropy.wcs.Sip.html#astropy.wcs.Sip" title="astropy.wcs.Sip"><tt class="xref py py-obj docutils literal"><span class="pre">Sip</span></tt></a> object for performing <a class="reference external" href="http://irsa.ipac.caltech.edu/data/SPITZER/docs/files/spitzer/shupeADASS.pdf">SIP</a> distortion
correction.</p>
</dd></dl>
<dl class="attribute">
<dt id="astropy.wcs.WCSBase.wcs">
<tt class="descname">wcs</tt><a class="headerlink" href="#astropy.wcs.WCSBase.wcs" title="Permalink to this definition">¶</a></dt>
<dd><p>A <a class="reference internal" href="astropy.wcs.Wcsprm.html#astropy.wcs.Wcsprm" title="astropy.wcs.Wcsprm"><tt class="xref py py-obj docutils literal"><span class="pre">Wcsprm</span></tt></a> object to perform the basic <a class="reference external" href="http://www.atnf.csiro.au/~mcalabre/WCS/">wcslib</a> WCS
transformation.</p>
</dd></dl>
</dd></dl>
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