add percentile support to network traffic graphs

Set $CONFIG['percentile'] to a number and a XXth percentile line + legend
will be added to all network traffic (if_octets) graphs.

Closes #81

1 files changed, 1 insertions, 0 deletions

diff --git a/type/Base.class.php b/type/Base.class.php
index 40f3df0..883c98f 100644
--- a/type/Base.class.php
+++ b/type/Base.class.php
@@ -22,6 +22,7 @@ class Type_Base {
         var $height;
         var $graph_type;
         var $negative_io;
+        var $percentile = false;
         var $graph_smooth;
 
         var $files;