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+ <h1>Calculate a time weighted average concentration</h1>
+ </div>
+
+
+ <p>The moving average is built only using the values in the past, so
+the earliest possible time for the maximum in the time series returned
+is after one window has passed.</p>
+
+
+ <pre><span class='fu'>twa</span>(<span class='no'>x</span>, <span class='kw'>window</span> <span class='kw'>=</span> <span class='fl'>21</span>)
+
+<span class='co'># S3 method for one_box</span>
+<span class='fu'>twa</span>(<span class='no'>x</span>, <span class='kw'>window</span> <span class='kw'>=</span> <span class='fl'>21</span>)</pre>
+
+ <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a> Arguments</h2>
+ <dl class="dl-horizontal">
+ <dt>x</dt>
+ <dd>An object of type <code><a href='one_box.html'>one_box</a></code></dd>
+ <dt>window</dt>
+ <dd>The size of the moving window</dd>
+ </dl>
+
+ <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>
+
+ <p><code><a href='max_twa.html'>max_twa</a></code></p>
+
+
+ <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
+ <pre class="examples"><div class='input'><span class='no'>pred</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='sawtooth.html'>sawtooth</a></span>(<span class='fu'><a href='one_box.html'>one_box</a></span>(<span class='fl'>10</span>),
+ <span class='kw'>applications</span> <span class='kw'>=</span> <span class='fu'>data.frame</span>(<span class='kw'>time</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='fl'>0</span>, <span class='fl'>7</span>), <span class='kw'>amount</span> <span class='kw'>=</span> <span class='fu'>c</span>(<span class='fl'>1</span>, <span class='fl'>1</span>)))
+<span class='fu'><a href='max_twa.html'>max_twa</a></span>(<span class='no'>pred</span>)</div><div class='output co'>#&gt; $max
+#&gt; parent
+#&gt; 0.9537545
+#&gt;
+#&gt; $window_start
+#&gt; parent
+#&gt; 0
+#&gt;
+#&gt; $window_end
+#&gt; parent
+#&gt; 21
+#&gt; </div></pre>
+ </div>
+ <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="#see-also">See also</a></li>
+
+ <li><a href="#examples">Examples</a></li>
+ </ul>
+
+ </div>
+</div>
+
+ <footer>
+ <div class="copyright">
+ <p>Developed by Johannes Ranke.</p>
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