- Changed datsets to accept instances of ezcGraphDataSet only

- Added bar charts
- Globally increase acceptable difference noise for created images in tests

1 files changed, 4 insertions, 0 deletions

diff --git a/src/graph.php b/src/graph.php
index fa4555a..0b9cff3 100644
--- a/src/graph.php
+++ b/src/graph.php
@@ -29,6 +29,10 @@ class ezcGraph
     const RIGHT = 8;
     const CENTER = 16;
     const MIDDLE = 32;
+
+    const PIE = 1;
+    const LINE = 2;
+    const BAR = 3;
 }
 
 ?>