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<h1 class="declaration">function stddev</h1>
<p>
Returns the standard deviation of X, optionally omitting a value.
<br><br><b><font size=+2>Syntax</font></b><br>
<i>result</i> = stddev(X [, omit])
<br><br><b><font size=+2>Arguments</font></b><br>
<table CELLSPACING=0 CELLPADDING=0>
<tr VALIGN=TOP><td nowrap>X: </td>
<td> A matrix.</td></tr>
<tr VALIGN=TOP><td nowrap>omit: </td>
<td> A value to be omitted when calculating the standard deviation.</td></tr>
</table>
<br><br><b><font size=+2>Switches</font></b><br>
<table CELLSPACING=0 CELLPADDING=0>
<tr VALIGN=TOP><td nowrap>/x: </td>
<td> Calculate the standard deviation along the first axis</td></tr>
<tr VALIGN=TOP><td nowrap>/y: </td>
<td> Calculate the standard deviation along the second axis</td></tr>
<tr VALIGN=TOP><td nowrap>/z: </td>
<td> Calculate the standard deviation along the third axis</td></tr>
<tr VALIGN=TOP><td nowrap>/xy: </td>
<td> Calculate the standard deviation along the first and second axes</td></tr>
<tr VALIGN=TOP><td nowrap>/xz: </td>
<td> Calculate the standard deviation along the first and third axes</td></tr>
<tr VALIGN=TOP><td nowrap>/yz: </td>
<td> Calculate the standard deviation along the second and third axes</td></tr>
</table>
<br><br><b><font size=+2>Examples</font></b><br>
To get a 1D vector of the standard deviation of all slices along a 3D cube:
<br><tt> v = stddev(cube, /xy)</tt>
<br><br><b><font size=+2>See also</font></b><br>
<a href = "function_max.html">function max</a><br>
<a href = "function_min.html">function min</a><br>
<a href = "function_avg.html">function avg</a><br>
<a href = "function_total.html">function total</a><br>
<a href = "function_median.html">function median</a><br>
<a href = "function_stddev.html">function stddev</a><br>
<a href = "function_variance.html">function variance</a><br>
<a href = "function_meddev.html">function meddev</a><br>
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