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Subsetting can be by time or depth, but these may not be
combined; use a sequence of calls to subset by both."><meta property="og:description" content="This function is somewhat analogous to subset.data.frame().
Subsetting can be by time or depth, but these may not be
combined; use a sequence of calls to subset by both."></head><body>
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      <h1>Subset an echosounder Object</h1>
      <small class="dont-index">Source: <a href="https://github.com/dankelley/oce/blob/HEAD/R/echosounder.R" class="external-link"><code>R/echosounder.R</code></a></small>
      <div class="d-none name"><code>subset-echosounder-method.Rd</code></div>
    </div>

    <div class="ref-description section level2">
    <p>This function is somewhat analogous to <code><a href="https://rdrr.io/r/base/subset.html" class="external-link">subset.data.frame()</a></code>.
Subsetting can be by <code>time</code> or <code>depth</code>, but these may not be
combined; use a sequence of calls to subset by both.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="co"># S4 method for class 'echosounder'</span></span>
<span><span class="fu"><a href="https://rdrr.io/r/base/subset.html" class="external-link">subset</a></span><span class="op">(</span><span class="va">x</span>, <span class="va">subset</span>, <span class="va">...</span><span class="op">)</span></span></code></pre></div>
    </div>

    <div class="section level2">
    <h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>


<dl><dt id="arg-x">x<a class="anchor" aria-label="anchor" href="#arg-x"></a></dt>
<dd><p>an <a href="echosounder-class.html">echosounder</a> object.</p></dd>


<dt id="arg-subset">subset<a class="anchor" aria-label="anchor" href="#arg-subset"></a></dt>
<dd><p>a condition to be applied to the <code>data</code> portion of
<code>x</code>.  See “Details”.</p></dd>


<dt id="arg--">...<a class="anchor" aria-label="anchor" href="#arg--"></a></dt>
<dd><p>ignored.</p></dd>

</dl></div>
    <div class="section level2">
    <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
    <p>An <a href="echosounder-class.html">echosounder</a> object.</p>
    </div>
    <div class="section level2">
    <h2 id="see-also">See also<a class="anchor" aria-label="anchor" href="#see-also"></a></h2>
    <div class="dont-index"><p>Other things related to echosounder data:
<code><a href="sub-sub-echosounder-method.html">[[,echosounder-method</a></code>,
<code>[[&lt;-,echosounder-method</code>,
<code><a href="as.echosounder.html">as.echosounder</a>()</code>,
<code><a href="echosounder.html">echosounder</a></code>,
<code><a href="echosounder-class.html">echosounder-class</a></code>,
<code><a href="findBottom.html">findBottom</a>()</code>,
<code><a href="plot-echosounder-method.html">plot,echosounder-method</a></code>,
<code><a href="read.echosounder.html">read.echosounder</a>()</code>,
<code><a href="summary-echosounder-method.html">summary,echosounder-method</a></code></p>
<p>Other functions that subset oce objects:
<code><a href="subset-adp-method.html">subset,adp-method</a></code>,
<code><a href="subset-adv-method.html">subset,adv-method</a></code>,
<code><a href="subset-amsr-method.html">subset,amsr-method</a></code>,
<code><a href="subset-argo-method.html">subset,argo-method</a></code>,
<code><a href="subset-cm-method.html">subset,cm-method</a></code>,
<code><a href="subset-coastline-method.html">subset,coastline-method</a></code>,
<code><a href="subset-ctd-method.html">subset,ctd-method</a></code>,
<code><a href="subset-lobo-method.html">subset,lobo-method</a></code>,
<code><a href="subset-met-method.html">subset,met-method</a></code>,
<code><a href="subset-oce-method.html">subset,oce-method</a></code>,
<code><a href="subset-odf-method.html">subset,odf-method</a></code>,
<code><a href="subset-rsk-method.html">subset,rsk-method</a></code>,
<code><a href="subset-sealevel-method.html">subset,sealevel-method</a></code>,
<code><a href="subset-section-method.html">subset,section-method</a></code>,
<code><a href="subset-topo-method.html">subset,topo-method</a></code>,
<code><a href="subset-xbt-method.html">subset,xbt-method</a></code></p></div>
    </div>
    <div class="section level2">
    <h2 id="author">Author<a class="anchor" aria-label="anchor" href="#author"></a></h2>
    <p>Dan Kelley</p>
    </div>

    <div class="section level2">
    <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="kw"><a href="https://rdrr.io/r/base/library.html" class="external-link">library</a></span><span class="op">(</span><span class="va"><a href="https://dankelley.github.io/oce/">oce</a></span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/utils/data.html" class="external-link">data</a></span><span class="op">(</span><span class="va">echosounder</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><span class="op">(</span><span class="va">echosounder</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="subset-echosounder-method-1.png" alt="" width="700" height="700"></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/subset.html" class="external-link">subset</a></span><span class="op">(</span><span class="va">echosounder</span>, <span class="va">depth</span> <span class="op">&lt;</span> <span class="fl">10</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="subset-echosounder-method-2.png" alt="" width="700" height="700"></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/subset.html" class="external-link">subset</a></span><span class="op">(</span><span class="va">echosounder</span>, <span class="va">time</span> <span class="op">&lt;</span> <span class="fu"><a href="https://rdrr.io/r/base/mean.html" class="external-link">mean</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/range.html" class="external-link">range</a></span><span class="op">(</span><span class="va">echosounder</span><span class="op">[[</span><span class="st">"time"</span><span class="op">]</span><span class="op">]</span><span class="op">)</span><span class="op">)</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="subset-echosounder-method-3.png" alt="" width="700" height="700"></span>
<span class="r-in"><span></span></span>
</code></pre></div>
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