1 files changed, 13 insertions, 2 deletions

diff --git a/type/Default.class.php b/type/Default.class.php
index 9e2e6b7..f15ca32 100644
--- a/type/Default.class.php
+++ b/type/Default.class.php
@@ -149,7 +149,18 @@ class Type_Default {
                                 $this->tinstances = array_intersect($this->order, $this->tinstances);
                         }
                         # use tinstances as sources
-                        $sources = $this->tinstances;
+                        if(is_array($this->data_sources) && count($this->data_sources)>1) {
+                                $sources = array();
+                                foreach($this->tinstances as $f) {
+                                        foreach($this->data_sources as $s) {
+                                                $sources[] = $f . '-' . $s;
+                                        }
+                                }
+                        }
+                        else {
+                                $sources = $this->tinstances;
+                        }
+                        $sources = str_replace('.', '_', $sources);
                 }
                 # or one file with multiple data_sources
                 else {
@@ -182,7 +193,7 @@ class Type_Default {
                         }
                 }
 
-                foreach($sources as $source) {
+                foreach ($sources as $source) {
                         $dsname = $this->ds_names[$source] != '' ? $this->ds_names[$source] : $source;
                         $color = is_array($this->colors) ? $this->colors[$source]: $this->colors;
                         $rrdgraph[] = sprintf('LINE1:avg_%s#%s:\'%s\'', crc32hex($source), $this->validate_color($color), $dsname);