[phpwiki-checkins] SF.net SVN: phpwiki:[8670] trunk/lib/plugin/SystemInfo.php

[<var...@us...>]

Revision: 8670
          http://phpwiki.svn.sourceforge.net/phpwiki/?rev=8670&view=rev
Author:   vargenau
Date:     2012-12-17 15:58:29 +0000 (Mon, 17 Dec 2012)
Log Message:
-----------
Fix mean and median calculation

Modified Paths:
--------------
    trunk/lib/plugin/SystemInfo.php

Modified: trunk/lib/plugin/SystemInfo.php
===================================================================
--- trunk/lib/plugin/SystemInfo.php	2012-12-17 14:58:07 UTC (rev 8669)
+++ trunk/lib/plugin/SystemInfo.php	2012-12-17 15:58:29 UTC (rev 8670)
@@ -224,11 +224,8 @@
             $max = max($h, $max);
             $min = min($h, $min);
         }
-        $median_i = (int)$n / 2;
-        if (!($n / 2))
-            $median = $hits[$median_i];
-        else
-            $median = $hits[$median_i];
+        $mean = $n ? $sum / $n : 0;
+        $median = $hits[ (int)($n / 2) ];
         $mintreshold = $max * $treshold / 100.0; // lower than 10% of the hits
         reset($hits);
         $nmin = $hits[0] < $mintreshold ? 1 : 0;
@@ -243,7 +240,7 @@
             'sum' => $sum,
             'min' => $min,
             'max' => $max,
-            'mean' => $sum / $n,
+            'mean' => $mean,
             'median' => $median,
             'stddev' => stddev($hits, $sum),
             'treshold' => $treshold,
@@ -569,7 +566,7 @@
     sort($hits);
     reset($hits);
     $n = count($hits);
-    $median = (int)$n / 2;
+    $median = (int)($n / 2);
     if (!($n % 2)) // proper rounding on even length
         return ($hits[$median] + $hits[$median - 1]) * 0.5;
     else

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