type/GenericStacked: make stack NaN-safe using ADDNAN instead of +

Reported-By: Julien Genestoux <julien.genestoux@gmail.com> (#24)
pommi · Oct 7, 2013 · fc533de · fc533de
1 parent e7dcbd9
commit fc533de
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/type/GenericStacked.class.php b/type/GenericStacked.class.php
@@ -37,7 +37,7 @@ function rrd_gen_graph() {
 			if ($i == (count($sources)-1))
 				$rrdgraph[] = sprintf('CDEF:area_%s=avg_%1$s', crc32hex($sources[$i]));
 			else
-				$rrdgraph[] = sprintf('CDEF:area_%s=area_%s,avg_%1$s,+', crc32hex($sources[$i]), crc32hex($sources[$i+1]));
+				$rrdgraph[] = sprintf('CDEF:area_%s=area_%s,avg_%1$s,ADDNAN', crc32hex($sources[$i]), crc32hex($sources[$i+1]));
 		}
 
 		$c = 0;