From f8b5ddbe75755f91d50ec870e176516ec38181c9 Mon Sep 17 00:00:00 2001
From: Pim van den Berg
Date: Mon, 22 Jun 2015 14:40:11 +0200
Subject: fix PHP Notice about Undefined variable $aggr

Closes #122
---
 graph.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/graph.php b/graph.php
index 32748d6..f1696fa 100644
--- a/graph.php
+++ b/graph.php
@@ -83,7 +83,7 @@ switch ($plugin_json[$type]['type']) {
 }
 
 # in case of aggregation, reset pi after initializing $obj to get a correct title
-if ($aggr) {
+if (isset($aggr) && $aggr) {
 	$_GET['pi'] = GET('pi', $pi[1]);
 }
 
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