fix PHP Notice about Undefined variable $aggr

Closes #122
pommi · Jun 22, 2015 · f8b5ddb · f8b5ddb
1 parent bb8cdf1
commit f8b5ddb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/graph.php b/graph.php
@@ -83,7 +83,7 @@
 }
 
 # 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]);
 }