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<title>Isotope standards — register_standard • isotopia</title>

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<meta property="og:title" content="Isotope standards — register_standard" />

<meta property="og:description" content="Isotopia provides functionality to register and retrieve isotope standards.
Registered standards can be used for automatic conversions of, for example,
delta values which have attributes that match a standard." />
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    <h1>Isotope standards</h1>
    <small class="dont-index">Source: <a href='https://github.com/sebkopf/isotopia/blob/master/R/options.R'><code>R/options.R</code></a></small>
    <div class="hidden name"><code>standards.Rd</code></div>
    </div>

    <div class="ref-description">
    
    <p>Isotopia provides functionality to register and retrieve isotope standards.
Registered standards can be used for automatic conversions of, for example,
delta values which have attributes that match a standard.</p>
    
    </div>

    <pre class="usage"><span class='fu'>register_standard</span>(<span class='no'>ratio</span>)

<span class='fu'>get_standards</span>(<span class='kw'>minor</span> <span class='kw'>=</span> <span class='kw'>NULL</span>, <span class='kw'>major</span> <span class='kw'>=</span> <span class='kw'>NULL</span>, <span class='kw'>name</span> <span class='kw'>=</span> <span class='kw'>NULL</span>)

<span class='fu'>get_standard</span>(<span class='kw'>minor</span> <span class='kw'>=</span> <span class='kw'>NULL</span>, <span class='kw'>major</span> <span class='kw'>=</span> <span class='kw'>NULL</span>, <span class='kw'>name</span> <span class='kw'>=</span> <span class='kw'>NULL</span>)</pre>
    
    <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
    <table class="ref-arguments">
    <colgroup><col class="name" /><col class="desc" /></colgroup>
    <tr>
      <th>ratio</th>
      <td><p>- a <code><a href='ratio.html'>ratio</a></code> object with 'minor', 
and 'major' isotope as well as 'compound' (the name of the standard) attributes all defined</p></td>
    </tr>
    <tr>
      <th>minor</th>
      <td><p>- character vector of minor isotope names to search for</p></td>
    </tr>
    <tr>
      <th>major</th>
      <td><p>- character vector of major isotope names to search for</p></td>
    </tr>
    <tr>
      <th>name</th>
      <td><p>- character vector of standards names to search for</p></td>
    </tr>
    </table>
    
    <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>

    <p>list of ratio objects</p>
    
    <h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2>

    <p>Use <code>register_standard()</code> to register an isotope standard. This can be useful
for keeping track of standards you use internally and will also allow
conversions from <code><a href='delta.html'>delta</a></code> to e.g. <code><a href='ratio.html'>ratio</a></code> to 
automatically try to find the approriate standard for the conversion
from the registered values.</p>
<p>Use <code>get_stanards</code> to retrieve any number of registered isotope standards
that can be identified with the provided search terms. For an overview
table of all standards (rather than the actual ratio objects), 
use <code><a href='iso_opts.html'>get_iso_opts("standards")</a></code> instead.</p>
<p><code>get_standard</code> is the same as <code>get_standards</code> except that it
returns a single object from the found standards and throws an error
if the search criteria did not yield exactly one.</p>
    
    <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>

    <div class='dont-index'><p>Other options: <code><a href='iso_opts.html'>set_iso_opts</a></code></p></div>
    

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  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
    <h2>Contents</h2>
    <ul class="nav nav-pills nav-stacked">
      <li><a href="#arguments">Arguments</a></li>
      
      <li><a href="#value">Value</a></li>

      <li><a href="#details">Details</a></li>

      <li><a href="#see-also">See also</a></li>
          </ul>

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