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    <h1>R6 class for holding TOXSWA water concentration data and associated statistics</h1>
    <small class="dont-index">Source: <a href='https://github.com/jranke/pfm/blob/master/R/TOXSWA_cwa.R'><code>R/TOXSWA_cwa.R</code></a></small>
    <div class="hidden name"><code>TOXSWA_cwa.Rd</code></div>
    </div>

    <div class="ref-description">
    
    <p>An R6 class for holding TOXSWA water concentration (cwa) data and some associated statistics.
Usually, an instance of this class will be generated by <code><a href='read.TOXSWA_cwa.html'>read.TOXSWA_cwa</a></code>.</p>
    
    </div>

    <pre class="usage"><span class='no'>TOXSWA_cwa</span></pre>
        
    <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h2>

    <p>An <code>R6Class</code> generator object.</p>
    
    <h2 class="hasAnchor" id="fields"><a class="anchor" href="#fields"></a>Fields</h2>

    
    <dl class='dl-horizontal'>
<dt><code>filename</code></dt><dd><p>Length one character vector.</p></dd>
    <dt><code>basedir</code></dt><dd><p>Length one character vector.</p></dd>
    <dt><code>segment</code></dt><dd><p>Length one integer, specifying for which segment the cwa data were read.</p></dd>
    <dt><code>cwas</code></dt><dd><p>Dataframe holding the concentrations.</p></dd>
    <dt><code>events</code></dt><dd><p>List of dataframes holding the event statistics for each threshold.</p></dd>
    <dt><code>windows</code></dt><dd><p>Matrix of maximum time weighted average concentrations (TWAC_max)
and areas under the curve in µg/day * h (AUC_max_h) or µg/day * d (AUC_max_d)
for the requested moving window sizes in days.</p></dd>
</dl>
    
    <h2 class="hasAnchor" id="methods"><a class="anchor" href="#methods"></a>Methods</h2>

    
    <dl class='dl-horizontal'>
  <dt><code>get_events(threshold, total = FALSE)</code></dt><dd><p>Populate a datataframe with event information for the specified threshold value
        in µg/L. If <code>total = TRUE</code>, the total concentration including the amount
        adsorbed to suspended matter will be used. The resulting dataframe is stored in the
        <code>events</code> field of the object.</p></dd>
  <dt><code>moving_windows(windows, total = FALSE)</code></dt><dd><p>Add to the <code>windows</code> field described above.
        Again, if <code>total = TRUE</code>, the total concentration including the amount
        adsorbed to suspended matter will be used.</p></dd>
</dl>
    

    <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
    <pre class="examples"><div class='input'><span class='no'>H_sw_R1_stream</span>  <span class='kw'>&lt;-</span> <span class='fu'><a href='read.TOXSWA_cwa.html'>read.TOXSWA_cwa</a></span>(<span class='st'>"00003s_pa.cwa"</span>,
                                 <span class='kw'>basedir</span> <span class='kw'>=</span> <span class='st'>"SwashProjects/project_H_sw/TOXSWA"</span>,
                                 <span class='kw'>zipfile</span> <span class='kw'>=</span> <span class='fu'>system.file</span>(<span class='st'>"testdata/SwashProjects.zip"</span>,
                                             <span class='kw'>package</span> <span class='kw'>=</span> <span class='st'>"pfm"</span>))
<span class='no'>H_sw_R1_stream</span>$<span class='fu'>get_events</span>(<span class='fu'>c</span>(<span class='fl'>2</span>, <span class='fl'>10</span>))
<span class='no'>H_sw_R1_stream</span>$<span class='fu'>moving_windows</span>(<span class='fu'>c</span>(<span class='fl'>7</span>, <span class='fl'>21</span>))
<span class='fu'>print</span>(<span class='no'>H_sw_R1_stream</span>)</div><div class='output co'>#&gt; &lt;TOXSWA_cwa&gt; data from file 00003s_pa.cwa segment 20 
#&gt;                datetime     t t_firstjan t_rel_to_max cwa_mug_per_L
#&gt; 20  1978-10-01 00:00:00 0.000   273.0000      -55.333             0
#&gt; 40  1978-10-01 01:00:00 0.042   273.0417      -55.291             0
#&gt; 60  1978-10-01 02:00:00 0.083   273.0833      -55.250             0
#&gt; 80  1978-10-01 03:00:00 0.125   273.1250      -55.208             0
#&gt; 100 1978-10-01 04:00:00 0.167   273.1667      -55.166             0
#&gt; 120 1978-10-01 05:00:00 0.208   273.2083      -55.125             0
#&gt;     cwa_tot_mug_per_L
#&gt; 20                  0
#&gt; 40                  0
#&gt; 60                  0
#&gt; 80                  0
#&gt; 100                 0
#&gt; 120                 0
#&gt; Moving window analysis
#&gt;    window  max_TWAC max_AUC_h max_AUC_d
#&gt; 1  7 days 2.3926551  401.9660  16.74859
#&gt; 2 21 days 0.8369248  421.8101  17.57542
#&gt; Event statistics for threshold 2 
#&gt;   t_start   cwa_max duration pre_interval     AUC_h     AUC_d
#&gt; 1  44.375  4.167238    0.208       44.375  17.77202  0.740501
#&gt; 2  55.042 40.584010    0.583       10.459 398.21189 16.592162
#&gt; Event statistics for threshold 10 
#&gt;   t_start  cwa_max duration pre_interval   AUC_h    AUC_d
#&gt; 1  55.083 40.58401    0.459       55.083 379.433 15.80971</div></pre>
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    <h2>Contents</h2>
    <ul class="nav nav-pills nav-stacked">
      
      <li><a href="#format">Format</a></li>

      <li><a href="#fields">Fields</a></li>

      <li><a href="#methods">Methods</a></li>
      
      <li><a href="#examples">Examples</a></li>
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