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<h1 class="declaration">function boxcar</h1>
<p>
Computes a running boxcar with radius WIDTH. By default, the value is replaces by the average in the box. This can be changed by specifying one of the switches /minimum, /maximum, or /median.
<br><br><b><font size=+2>Syntax</font></b><br>
<i>result</i> = boxcar(X, WIDTH [, /minimum | /maximum | /median] [,/x | /y | /z | /xy])
<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>WIDTH: </td>
<td> An integer number specifying the radius of the box.</td></tr>
</table>
<br><br><b><font size=+2>Switches</font></b><br>
<table CELLSPACING=0 CELLPADDING=0>
<tr VALIGN=TOP><td nowrap>/minimum: </td>
<td> Each value is replaced with the minimum within a box with radius WIDTH</td></tr>
<tr VALIGN=TOP><td nowrap>/maximum: </td>
<td> Each value is replaced with the maximum within a box with radius WIDTH</td></tr>
<tr VALIGN=TOP><td nowrap>/median: </td>
<td> Each value is replaced with the median within a box with radius WIDTH</td></tr>
<tr VALIGN=TOP><td nowrap>/x: </td>
<td> Boxcar along the first axis</td></tr>
<tr VALIGN=TOP><td nowrap>/y: </td>
<td> Boxcar along the second axis</td></tr>
<tr VALIGN=TOP><td nowrap>/z: </td>
<td> Boxcar along the third axis</td></tr>
<tr VALIGN=TOP><td nowrap>/xy: </td>
<td> 2D boxcar along the first and second axes (default)</td></tr>
</table>
<br><br><b><font size=+2>See also</font></b><br>
<a href = "function_smooth.html">function smooth</a><br>
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