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@@ -242,7 +242,7 @@
 <span id="cb1-13"><a href="#cb1-13" aria-hidden="true" tabindex="-1"></a><span class="co">#&gt; 10    16        A</span></span></code></pre><p></p></div>
 <p>The following <a href="https://rdrr.io/r/base/groupGeneric.html" class="external-link">generic functions</a> are implemented for the MIC class: <code>!</code>, <code>!=</code>, <code>%%</code>, <code>%/%</code>, <code>&amp;</code>, <code>*</code>, <code>+</code>, <code>-</code>, <code>/</code>, <code>&lt;</code>, <code>&lt;=</code>, <code>==</code>, <code>&gt;</code>, <code>&gt;=</code>, <code>^</code>, <code>|</code>, <code><a href="https://rdrr.io/r/base/MathFun.html" class="external-link">abs()</a></code>, <code><a href="https://rdrr.io/r/base/Trig.html" class="external-link">acos()</a></code>, <code><a href="https://rdrr.io/r/base/Hyperbolic.html" class="external-link">acosh()</a></code>, <code><a href="https://rdrr.io/r/base/all.html" class="external-link">all()</a></code>, <code><a href="https://rdrr.io/r/base/any.html" class="external-link">any()</a></code>, <code><a href="https://rdrr.io/r/base/Trig.html" class="external-link">asin()</a></code>, <code><a href="https://rdrr.io/r/base/Hyperbolic.html" class="external-link">asinh()</a></code>, <code><a href="https://rdrr.io/r/base/Trig.html" class="external-link">atan()</a></code>, <code><a href="https://rdrr.io/r/base/Hyperbolic.html" class="external-link">atanh()</a></code>, <code><a href="https://rdrr.io/r/base/Round.html" class="external-link">ceiling()</a></code>, <code><a href="https://rdrr.io/r/base/Trig.html" class="external-link">cos()</a></code>, <code><a href="https://rdrr.io/r/base/Hyperbolic.html" class="external-link">cosh()</a></code>, <code><a href="https://rdrr.io/r/base/Trig.html" class="external-link">cospi()</a></code>, <code><a href="https://rdrr.io/r/base/cumsum.html" class="external-link">cummax()</a></code>, <code><a href="https://rdrr.io/r/base/cumsum.html" class="external-link">cummin()</a></code>, <code><a href="https://rdrr.io/r/base/cumsum.html" class="external-link">cumprod()</a></code>, <code><a href="https://rdrr.io/r/base/cumsum.html" class="external-link">cumsum()</a></code>, <code><a href="https://rdrr.io/r/base/Special.html" class="external-link">digamma()</a></code>, <code><a href="https://rdrr.io/r/base/Log.html" class="external-link">exp()</a></code>, <code><a href="https://rdrr.io/r/base/Log.html" class="external-link">expm1()</a></code>, <code><a href="https://rdrr.io/r/base/Round.html" class="external-link">floor()</a></code>, <code><a href="https://rdrr.io/r/base/Special.html" class="external-link">gamma()</a></code>, <code><a href="https://rdrr.io/r/base/Special.html" class="external-link">lgamma()</a></code>, <code><a href="https://rdrr.io/r/base/Log.html" class="external-link">log()</a></code>, <code><a href="https://rdrr.io/r/base/Log.html" class="external-link">log1p()</a></code>, <code><a href="https://rdrr.io/r/base/Log.html" class="external-link">log2()</a></code>, <code><a href="https://rdrr.io/r/base/Log.html" class="external-link">log10()</a></code>, <code><a href="https://rdrr.io/r/base/Extremes.html" class="external-link">max()</a></code>, <code><a href="https://rdrr.io/r/base/mean.html" class="external-link">mean()</a></code>, <code><a href="https://rdrr.io/r/base/Extremes.html" class="external-link">min()</a></code>, <code><a href="https://rdrr.io/r/base/prod.html" class="external-link">prod()</a></code>, <code><a href="https://rdrr.io/r/base/range.html" class="external-link">range()</a></code>, <code><a href="https://rdrr.io/r/base/Round.html" class="external-link">round()</a></code>, <code><a href="https://rdrr.io/r/base/sign.html" class="external-link">sign()</a></code>, <code><a href="https://rdrr.io/r/base/Round.html" class="external-link">signif()</a></code>, <code><a href="https://rdrr.io/r/base/Trig.html" class="external-link">sin()</a></code>, <code><a href="https://rdrr.io/r/base/Hyperbolic.html" class="external-link">sinh()</a></code>, <code><a href="https://rdrr.io/r/base/Trig.html" class="external-link">sinpi()</a></code>, <code><a href="https://rdrr.io/r/base/MathFun.html" class="external-link">sqrt()</a></code>, <code><a href="https://rdrr.io/r/base/sum.html" class="external-link">sum()</a></code>, <code><a href="https://rdrr.io/r/base/Trig.html" class="external-link">tan()</a></code>, <code><a href="https://rdrr.io/r/base/Hyperbolic.html" class="external-link">tanh()</a></code>, <code><a href="https://rdrr.io/r/base/Trig.html" class="external-link">tanpi()</a></code>, <code><a href="https://rdrr.io/r/base/Special.html" class="external-link">trigamma()</a></code> and <code><a href="https://rdrr.io/r/base/Round.html" class="external-link">trunc()</a></code>. Some functions of the <code>stats</code> package are also implemented: <code><a href="https://rdrr.io/r/stats/median.html" class="external-link">median()</a></code>, <code><a href="https://rdrr.io/r/stats/quantile.html" class="external-link">quantile()</a></code>, <code><a href="https://rdrr.io/r/stats/mad.html" class="external-link">mad()</a></code>, <code><a href="https://rdrr.io/r/stats/IQR.html" class="external-link">IQLine truncated
 <p>Using <code><a href="https://rdrr.io/r/base/double.html" class="external-link">as.double()</a></code> or <code><a href="https://rdrr.io/r/base/numeric.html" class="external-link">as.numeric()</a></code> on MIC values will remove the operators and return a numeric vector. Do <strong>not</strong> use <code><a href="https://rdrr.io/r/base/integer.html" class="external-link">as.integer()</a></code> on MIC values as by the <span style="R">R</span> convention on <a href="https://rdrr.io/r/base/factor.html" class="external-link">factor</a>s, it will return the index of the factor levels (which is often useless for regular users).</p>
-<p>Use <code><a href="https://rdrr.io/r/base/droplevels.html" class="external-link">droplevels()</a></code> to drop unused levels. At default, it will return a plain factor. Use <code>droplevels(..., as.mic = TRUE)</code> to maintain the <code>mic</code> class.</p>
+<p>Use <code><a href="https://rdatatable.gitlab.io/data.table/reference/fdroplevels.html" class="external-link">droplevels()</a></code> to drop unused levels. At default, it will return a plain factor. Use <code>droplevels(..., as.mic = TRUE)</code> to maintain the <code>mic</code> class.</p>
 <p>With <code>rescale_mic()</code>, existing MIC ranges can be rescaled to a defined range of MIC values. This can be useful to better compare MIC distributions.</p>
 <p>For <code>ggplot2</code>, use one of the <code><a href="plot.html">scale_*_mic()</a></code> functions to plot MIC values. They allows custom MIC ranges and to plot intermediate log2 levels for missing MIC values.</p>
 <p><code>NA_mic_</code> is a missing value of the new <code>mic</code> class, analogous to e.g. base <span style="R">R</span>'s <code><a href="https://rdrr.io/r/base/NA.html" class="external-link">NA_character_</a></code>.</p>