examples.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
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<chapter xml:id="rrd.examples" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 &reftitle.examples;
 <section xml:id="rrd.examples-procedural">
  <title>Ejemplo procedural PECL/rrd</title>
  <para>
   <example>
    <title>Procedimiento de utilización de rrd</title>
    <programlisting role="php">
<![CDATA[
<?php
$rrdFile = dirname(__FILE__) . "/speed.rrd";

//crear el archivo rrd
rrd_create($rrdFile,
 array(
  "--start",920804400,
  "DS:speed:COUNTER:600:U:U",
  "RRA:AVERAGE:0.5:1:24",
  "RRA:AVERAGE:0.5:6:10"
  )
);

//actualizar el archivo rrd
rrd_update($rrdFile,
 array(
  "920804700:12345",
  "920805000:12357"
  )
);

//gráfico de salida
rrd_graph(dirname(__FILE__) . "/speed.png",
 array(
  "--start", "920804400",
  "--end", "920808000",
  "--vertical-label", "m/s",
  "DEF:myspeed=$rrdFile:speed:AVERAGE",
  "CDEF:realspeed=myspeed,1000,*",
  "LINE2:realspeed#FF0000"
 )
);
?>
]]>
    </programlisting>
   </example>
  </para>
 </section>

 <section xml:id="rrd.examples-oop">
  <title>Ejemplo OOP PECL/rrd</title>
  <para>
   <example>
    <title>Procedimiento de utilización de OOP rrd</title>
    <programlisting role="php">
<![CDATA[
<?php
$rrdFile = dirname(__FILE__) . "/speed.rrd";
$outputPngFile = dirname(__FILE__) . "/speed.png";

$creator = new RRDCreator($rrdFile, "now -10d", 500);
$creator->addDataSource("speed:COUNTER:600:U:U");
$creator->addArchive("AVERAGE:0.5:1:24");
$creator->addArchive("AVERAGE:0.5:6:10");
$creator->save();

$updater = new RRDUpdater($rrdFile);
$updater->update(array("speed" => "12345"), "920804700");
$updater->update(array("speed" => "12357"), "920805000");

$graphObj = new RRDGraph($outputPngFile);
$graphObj->setOptions(
    array(
        "--start" => "920804400",
        "--end" => 920808000,
        "--vertical-label" => "m/s",
        "DEF:myspeed=$rrdFile:speed:AVERAGE",
        "CDEF:realspeed=myspeed,1000,*",
        "LINE2:realspeed#FF0000"
    )
);
$graphObj->save();
?>
]]>
    </programlisting>
   </example>
  </para>
 </section>

</chapter>

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