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<a name="g_t2D-Histogram-Statistics"></a>
<div class="header">
<p>
Next: <a href="2D-Histogram-Operations.html#g_t2D-Histogram-Operations" accesskey="n" rel="next">2D Histogram Operations</a>, Previous: <a href="Searching-2D-histogram-ranges.html#Searching-2D-histogram-ranges" accesskey="p" rel="previous">Searching 2D histogram ranges</a>, Up: <a href="Histograms.html#Histograms" accesskey="u" rel="up">Histograms</a> [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="g_t2D-Histogram-Statistics-1"></a>
<h3 class="section">23.18 2D Histogram Statistics</h3>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fmax_005fval"></a>Function: <em>double</em> <strong>gsl_histogram2d_max_val</strong> <em>(const gsl_histogram2d * <var>h</var>)</em></dt>
<dd><p>This function returns the maximum value contained in the histogram bins.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fmax_005fbin"></a>Function: <em>void</em> <strong>gsl_histogram2d_max_bin</strong> <em>(const gsl_histogram2d * <var>h</var>, size_t * <var>i</var>, size_t * <var>j</var>)</em></dt>
<dd><p>This function finds the indices of the bin containing the maximum value
in the histogram <var>h</var> and stores the result in (<var>i</var>,<var>j</var>). In
the case where several bins contain the same maximum value the first bin
found is returned.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fmin_005fval"></a>Function: <em>double</em> <strong>gsl_histogram2d_min_val</strong> <em>(const gsl_histogram2d * <var>h</var>)</em></dt>
<dd><p>This function returns the minimum value contained in the histogram bins.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fmin_005fbin"></a>Function: <em>void</em> <strong>gsl_histogram2d_min_bin</strong> <em>(const gsl_histogram2d * <var>h</var>, size_t * <var>i</var>, size_t * <var>j</var>)</em></dt>
<dd><p>This function finds the indices of the bin containing the minimum value
in the histogram <var>h</var> and stores the result in (<var>i</var>,<var>j</var>). In
the case where several bins contain the same maximum value the first bin
found is returned.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fxmean"></a>Function: <em>double</em> <strong>gsl_histogram2d_xmean</strong> <em>(const gsl_histogram2d * <var>h</var>)</em></dt>
<dd><p>This function returns the mean of the histogrammed x variable, where the
histogram is regarded as a probability distribution. Negative bin values
are ignored for the purposes of this calculation.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fymean"></a>Function: <em>double</em> <strong>gsl_histogram2d_ymean</strong> <em>(const gsl_histogram2d * <var>h</var>)</em></dt>
<dd><p>This function returns the mean of the histogrammed y variable, where the
histogram is regarded as a probability distribution. Negative bin values
are ignored for the purposes of this calculation.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fxsigma"></a>Function: <em>double</em> <strong>gsl_histogram2d_xsigma</strong> <em>(const gsl_histogram2d * <var>h</var>)</em></dt>
<dd><p>This function returns the standard deviation of the histogrammed
x variable, where the histogram is regarded as a probability
distribution. Negative bin values are ignored for the purposes of this
calculation.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fysigma"></a>Function: <em>double</em> <strong>gsl_histogram2d_ysigma</strong> <em>(const gsl_histogram2d * <var>h</var>)</em></dt>
<dd><p>This function returns the standard deviation of the histogrammed
y variable, where the histogram is regarded as a probability
distribution. Negative bin values are ignored for the purposes of this
calculation.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fcov"></a>Function: <em>double</em> <strong>gsl_histogram2d_cov</strong> <em>(const gsl_histogram2d * <var>h</var>)</em></dt>
<dd><p>This function returns the covariance of the histogrammed x and y
variables, where the histogram is regarded as a probability
distribution. Negative bin values are ignored for the purposes of this
calculation.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram2d_005fsum"></a>Function: <em>double</em> <strong>gsl_histogram2d_sum</strong> <em>(const gsl_histogram2d * <var>h</var>)</em></dt>
<dd><p>This function returns the sum of all bin values. Negative bin values
are included in the sum.
</p></dd></dl>
<hr>
<div class="header">
<p>
Next: <a href="2D-Histogram-Operations.html#g_t2D-Histogram-Operations" accesskey="n" rel="next">2D Histogram Operations</a>, Previous: <a href="Searching-2D-histogram-ranges.html#Searching-2D-histogram-ranges" accesskey="p" rel="previous">Searching 2D histogram ranges</a>, Up: <a href="Histograms.html#Histograms" accesskey="u" rel="up">Histograms</a> [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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