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<div class="section" id="find-all-wcs">
<h1>find_all_wcs<a class="headerlink" href="#find-all-wcs" title="Permalink to this headline">¶</a></h1>
<dl class="function">
<dt id="astropy.wcs.wcs.find_all_wcs">
<tt class="descclassname">astropy.wcs.wcs.</tt><tt class="descname">find_all_wcs</tt><big>(</big><em>header</em>, <em>relax=True</em>, <em>keysel=None</em><big>)</big><a class="reference external" href="http://github.com/astropy/astropy/tree/v0.2.4/astropy/wcs/wcs.py#L1589" title="Push the Edit button on the next page"><span class="edit-on-github viewcode-link"> [edit on github]</span></a><a class="reference internal" href="../_modules/astropy/wcs/wcs.html#find_all_wcs"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#astropy.wcs.wcs.find_all_wcs" title="Permalink to this definition">¶</a></dt>
<dd><p>Find all the WCS transformations in the given header.</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>header</strong> : string or astropy.io.fits header object.</p>
<p><strong>relax</strong> : bool or int, optional</p>
<blockquote>
<div><p>Degree of permissiveness:</p>
<ul class="simple">
<li><tt class="xref py py-obj docutils literal"><span class="pre">True</span></tt> (default): Admit all recognized informal extensions of the
WCS standard.</li>
<li><tt class="xref py py-obj docutils literal"><span class="pre">False</span></tt>: Recognize only FITS keywords defined by the
published WCS standard.</li>
<li><tt class="xref py py-obj docutils literal"><span class="pre">int</span></tt>: a bit field selecting specific extensions to accept.
See <a class="reference internal" href="../wcs/relax.html#relaxread"><em>Header-reading relaxation constants</em></a> for details.</li>
</ul>
</div></blockquote>
<p><strong>keysel</strong> : sequence of flags, optional</p>
<blockquote>
<div><p>A list of flags used to select the keyword types considered by
wcslib. When <tt class="docutils literal"><span class="pre">None</span></tt>, only the standard image header
keywords are considered (and the underlying wcspih() C
function is called). To use binary table image array or pixel
list keywords, <em>keysel</em> must be set.</p>
<p>Each element in the list should be one of the following strings:</p>
<blockquote>
<div><ul class="simple">
<li>‘image’: Image header keywords</li>
<li>‘binary’: Binary table image array keywords</li>
<li>‘pixel’: Pixel list keywords</li>
</ul>
</div></blockquote>
<p>Keywords such as <tt class="docutils literal"><span class="pre">EQUIna</span></tt> or <tt class="docutils literal"><span class="pre">RFRQna</span></tt> that are common to
binary table image arrays and pixel lists (including
<tt class="docutils literal"><span class="pre">WCSNna</span></tt> and <tt class="docutils literal"><span class="pre">TWCSna</span></tt>) are selected by both ‘binary’ and
‘pixel’.</p>
</div></blockquote>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns :</th><td class="field-body"><p class="first last"><strong>wcses</strong> : list of <a class="reference internal" href="astropy.wcs.wcs.WCS.html#astropy.wcs.wcs.WCS" title="astropy.wcs.wcs.WCS"><tt class="xref py py-obj docutils literal"><span class="pre">WCS</span></tt></a> objects</p>
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