From 3deff291c5713091bdb0346752796b47afc03879 Mon Sep 17 00:00:00 2001
From: Pim van den Berg
Date: Sat, 18 May 2013 22:53:39 +0200
Subject: add config option for showing smooth (curved) graphs

---
 conf/config.php        | 3 +++
 type/Default.class.php | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/conf/config.php b/conf/config.php
index c734b09..685589d 100644
--- a/conf/config.php
+++ b/conf/config.php
@@ -48,6 +48,9 @@ $CONFIG['graph_type'] = 'png';
 # use the negative X-axis in I/O graphs
 $CONFIG['negative_io'] = false;
 
+# create smooth graphs (rrdtool -E)
+$CONFIG['graph_smooth'] = false;
+
 # browser cache time for the graphs (in seconds)
 $CONFIG['cache'] = 90;
 
diff --git a/type/Default.class.php b/type/Default.class.php
index dfbf2da..42d5090 100644
--- a/type/Default.class.php
+++ b/type/Default.class.php
@@ -21,6 +21,7 @@ class Type_Default {
 	var $heigth;
 	var $graph_type;
 	var $negative_io;
+	var $graph_smooth;
 
 	var $files;
 	var $tinstances;
@@ -40,6 +41,7 @@ class Type_Default {
 		if (empty($this->heigth)) $this->heigth = $config['heigth'];
 		$this->graph_type = $config['graph_type'];
 		$this->negative_io = $config['negative_io'];
+		$this->graph_smooth = $config['graph_smooth'];
 	}
 
 	function rainbow_colors() {
@@ -211,6 +213,8 @@ class Type_Default {
 		}
 		if ($this->rrdtool_opts != '')
 			$rrdgraph[] = $this->rrdtool_opts;
+		if ($this->graph_smooth)
+			$rrdgraph[] = '-E';
 		$rrdgraph[] = sprintf('-w %d', is_numeric($this->width) ? $this->width : 400);
 		$rrdgraph[] = sprintf('-h %d', is_numeric($this->heigth) ? $this->heigth : 175);
 		$rrdgraph[] = '-l 0';
-- 
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