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      <h1>R6 class for holding TOXSWA cwa concentration data and associated statistics</h1>

<div class="row">
  <div class="span8">
    <h2>Usage</h2>
    <pre><span class="symbol">TOXSWA_cwa</span></pre>
        
    <div class="Format">
      <h2>Format</h2>

      <p>An <code><a href='http://www.rdocumentation.org/packages/R6/topics/R6Class'>R6Class</a></code> generator object.</p>

    </div>

    <div class="Description">
      <h2>Description</h2>

      <p>An R6 class for holding TOXSWA cwa concentration 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>

    <div class="Fields">
      <h2>Fields</h2>

      <p></p>

      <p><dl>
<dt><code>filename</code></dt><dd>Length one character vector.</dd></p>

      <p><dt><code>basedir</code></dt><dd>Length one character vector.</dd></p>

      <p><dt><code>segment</code></dt><dd>Length one integer, specifying for which segment the cwa data were read.</dd></p>

      <p><dt><code>cwas</code></dt><dd>Dataframe holding the concentrations.</dd></p>

      <p><dt><code>events</code></dt><dd>List of dataframes holding the event statistics for each threshold.</dd></p>

      <p><dt><code>windows</code></dt><dd>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.</dd></p>

      <p></dl></p>

    </div>

    <div class="Methods">
      <h2>Methods</h2>

      <p></p>

      <p><dl>
  <dt><code>get_events(threshold, total = FALSE)</code></dt><dd>
        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.
        </dd></p>

      <p><dt><code>moving_windows(windows, total = FALSE)</code></dt><dd>
        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.
        </dd></p>

      <p></dl></p>

      <p></p>

    </div>
    
    <h2 id="examples">Examples</h2>
    <pre class="examples"><div class='input'><span class="symbol">H_sw_R1_stream</span>  <span class="assignement">&lt;-</span> <span class="functioncall"><a href='read.TOXSWA_cwa.html'>read.TOXSWA_cwa</a></span><span class="keyword">(</span><span class="string">"00003s_pa.cwa"</span><span class="keyword">,</span>
                                 <span class="argument">basedir</span> <span class="argument">=</span> <span class="string">"SwashProjects/project_H_sw/TOXSWA"</span><span class="keyword">,</span>
                                 <span class="argument">zipfile</span> <span class="argument">=</span> <span class="functioncall"><a href='http://www.rdocumentation.org/packages/devtools/topics/system.file'>system.file</a></span><span class="keyword">(</span><span class="string">"testdata/SwashProjects.zip"</span><span class="keyword">,</span>
                                             <span class="argument">package</span> <span class="argument">=</span> <span class="string">"pfm"</span><span class="keyword">)</span><span class="keyword">)</span>
<span class="symbol">H_sw_R1_stream</span><span class="keyword">$</span><span class="functioncall">get_events</span><span class="keyword">(</span><span class="functioncall"><a href='http://www.rdocumentation.org/packages/base/topics/c'>c</a></span><span class="keyword">(</span><span class="number">2</span><span class="keyword">,</span> <span class="number">10</span><span class="keyword">)</span><span class="keyword">)</span>
<span class="symbol">H_sw_R1_stream</span><span class="keyword">$</span><span class="functioncall">moving_windows</span><span class="keyword">(</span><span class="functioncall"><a href='http://www.rdocumentation.org/packages/base/topics/c'>c</a></span><span class="keyword">(</span><span class="number">7</span><span class="keyword">,</span> <span class="number">21</span><span class="keyword">)</span><span class="keyword">)</span>
<span class="functioncall"><a href='http://www.rdocumentation.org/packages/base/topics/print'>print</a></span><span class="keyword">(</span><span class="symbol">H_sw_R1_stream</span><span class="keyword">)</span></div>
<div class='output'>&lt;TOXSWA_cwa&gt; data from file 00003s_pa.cwa segment 20 
               datetime     t t_firstjan t_rel_to_max cwa_mug_per_L
20  1978-10-01 00:00:00 0.000   273.0000      -55.333             0
40  1978-10-01 01:00:00 0.042   273.0417      -55.291             0
60  1978-10-01 02:00:00 0.083   273.0833      -55.250             0
80  1978-10-01 03:00:00 0.125   273.1250      -55.208             0
100 1978-10-01 04:00:00 0.167   273.1667      -55.166             0
120 1978-10-01 05:00:00 0.208   273.2083      -55.125             0
    cwa_tot_mug_per_L
20                  0
40                  0
60                  0
80                  0
100                 0
120                 0
Moving window analysis
   window  max_TWAC max_AUC_h max_AUC_d
1  7 days 2.3926551  401.9660  16.74859
2 21 days 0.8369248  421.8101  17.57542
Event statistics for threshold 2 
  t_start   cwa_max duration pre_interval     AUC_h     AUC_d
1  44.375  4.167238    0.208       44.375  17.77202  0.740501
2  55.042 40.584010    0.583       10.459 398.21189 16.592162
Event statistics for threshold 10 
  t_start  cwa_max duration pre_interval   AUC_h    AUC_d
1  55.083 40.58401    0.459       55.083 379.433 15.80971
</div></pre>
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