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<title>ploticus: proc print</title>
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<td><br><h2>proc print</h2></td>
<td align=right>
<small>
<a href="../doc/welcome.html"><img src="../doc/ploticus.gif" border=0></a><br>
Version 2.40 Jan'08
</small><br><a href="../doc/scripthome.html">Scripts</a>
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<br>
<br>
<title>Manual page for proc_print(PL)</title>
</head>
<body>
<p>
<b>proc print</b> may be used to print messages and debugging info.<tt> </tt>
It can print the contents of variables and/or
data fields to a file or to standard error.<tt> </tt>
It is mainly useful for displaying or exporting information
pertaining to outlier cases and for debugging a script.<tt> </tt>
Unless the <tt>outfile</tt> attribute is specified, information is
printed to the file/stream controlled by the <b>-diagfile</b>
command line option.<tt> </tt>
<br><br><br>
<h2>This proc is deprecated</h2>
This proc is now deprecated and may be removed from future releases.<tt> </tt>
The <tt>#write / #endwrite</tt>
<a href="scriptsyntax.html">
script directives
</a>
provide similar functionality.<tt> </tt>
<br><br><br>
<h2>Attributes</h2>
<p>
<b>label</b>
text
<dl>
<dt> <dd>
Arbitrary text that will be printed once. May include
@variable references using one at-sign (@). Typically
used to examine contents of variables or to print a header
for the cases listed by the <tt>select</tt> and <tt>print</tt> attributes.<tt> </tt>
<br><br>
</dl>
<p>
<b>select</b>
<a href="select.html">
select expression
</a>
<dl>
<dt> <dd>
Selects data records to print, using the <tt>print</tt> template.<tt> </tt>
<br><br>
</dl>
<p>
<b>print</b>
text
<dl>
<dt> <dd>
A template which may include variable and data field references.<tt> </tt>
This template will be printed once for every data record
that passes the selection condition.<tt> </tt>
Data fields are referenced by preceding with two at-signs (@@).<tt> </tt>
See example below.<tt> </tt>
<br><br>
</dl>
<p>
<b>outfile</b>
<i>filename</i>
<dl>
<dt> <dd>
If specified, the results of proc print will be written to this file.<tt> </tt>
If unspecified, results are written to the diagnostic stream (controllable
using -diagfile on command line).
<br><br>
</dl>
<p>
<b>outmode</b>
<tt>w | a</tt>
<dl>
<dt> <dd>
Controls the file write mode for <tt>outfile</tt>. Default is <tt>w</tt>.<tt> </tt>
w = write (create new file / erase
any current contents); a = append (append to any existing contents; if none then
create new file). See also fopen(2).<tt> </tt>
<br><br><br>
</dl>
<h2>Variables that are set by proc print</h2>
<b>NSELECTED</b> is set to the number of records selected.<tt> </tt>
Thus proc print may be used to count number of records meeting a certain criteria.<tt> </tt>
<br><br><br>
<h2>Example</h2>
<pre>
#set TODAY = $todaysdate()
#proc print
label: Outliers (run on @TODAY)
select: @@3 > 300
print: @@1 @@2 had a score of @@3
<br>
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