From 29df41a3f55657d02d84afc3f1a507ff2f561d07 Mon Sep 17 00:00:00 2001
From: Steffen Vogel <info@steffenvogel.de>
Date: Mon, 27 Sep 2010 15:13:43 +0200
Subject: [PATCH] fixed undefined index for sensor calculations

---
 backend/lib/Interpreter/SensorInterpreter.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/backend/lib/Interpreter/SensorInterpreter.php b/backend/lib/Interpreter/SensorInterpreter.php
index b8c0d4c..928de2b 100644
--- a/backend/lib/Interpreter/SensorInterpreter.php
+++ b/backend/lib/Interpreter/SensorInterpreter.php
@@ -38,12 +38,12 @@ class SensorInterpreter extends Interpreter {
 	public function getValues($groupBy = NULL) {
 		$data = parent::getData($groupBy);
 
-		$values = array();
 		foreach ($data as $reading) {
+			$count = isset($reading[2]) ? $reading[2] : 1;
 			$values[] = array(
 				$reading[0],
-				$reading[1] / $reading[2],	// calculate average (ungroup the sql sum() function)
-				$reading[2]
+				$reading[1] / $count,	// calculate average (ungroup the sql sum() function)
+				$count
 			);
 		}