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<h1 class="declaration">procedure writefits</h1>
<p>
Writes the array X to disk as a FITS file with specified filename, optionally as an extension. If X is a Fits List, a multiple extension FITS file is written.
<br><br><b><font size=+2>Syntax</font></b><br>
writefits FILENAME, X [, /ext]
<br><br><b><font size=+2>Arguments</font></b><br>
<table CELLSPACING=0 CELLPADDING=0 WIDTH="100%">
<tr VALIGN=TOP><td nowrap>FILENAME: </td>
<td> A string</td></tr>
<tr VALIGN=TOP><td nowrap>X: </td>
<td> A matrix or a Fits List</td></tr>
</table>
<br><br><b><font size=+2>Switches</font></b><br>
<table CELLSPACING=0 CELLPADDING=0 WIDTH="100%">
<tr VALIGN=TOP><td nowrap>/ext: </td>
<td> If specified, the matrix is written as a FITS image extension. If the file FILENAME exists already, the extension is appended (in which case the original FITS file must not be compressed), else an empty primary HDU is written and the extension appended.</td></tr>
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