diff --git a/Assets/Chart And Graph/Script/GraphChart/GraphData.cs b/Assets/Chart And Graph/Script/GraphChart/GraphData.cs
index 3dfe73cd..27aaf557 100644
--- a/Assets/Chart And Graph/Script/GraphChart/GraphData.cs	
+++ b/Assets/Chart And Graph/Script/GraphChart/GraphData.cs	
@@ -565,6 +565,23 @@ namespace ChartAndGraph
             return true;
         }
 
+        public int GetViewIndex(int dataIndex,string category)
+        {
+            CategoryData data = (CategoryData)mData[category];
+            int viewIndex = 0;
+            List<DoubleVector3> points = data.getPoints();
+            if (points.Count == 0)
+                viewIndex = 0;
+            if (dataIndex < 0)
+                viewIndex = 0;
+            for (int i = 0; i < points.Count; i++)
+            {
+                if (points[i].x == dataIndex)
+                    viewIndex = i;
+            }
+            return viewIndex;
+        }
+
         public DoubleVector3 GetPoint(string category, int index)
         {
             CategoryData data = (CategoryData)mData[category];
diff --git a/Assets/Scripts/Scenes/Ride/Scripts/ChartDataSourceScript.cs b/Assets/Scripts/Scenes/Ride/Scripts/ChartDataSourceScript.cs
index 9370ca71..4f1dc19d 100644
--- a/Assets/Scripts/Scenes/Ride/Scripts/ChartDataSourceScript.cs
+++ b/Assets/Scripts/Scenes/Ride/Scripts/ChartDataSourceScript.cs
@@ -159,14 +159,17 @@ namespace Assets.Scenes.Ride.Scripts
         }
         public int GetViewIndex(int index)
         {
-            foreach (var item in pointMap)
-            {
-                if (item.Key.Contains(index))
-                {
-                    return item.Value;
-                }
-            }
-            return index;
+            if (graph == null)
+                return index;
+            return graph.DataSource.GetViewIndex(index, Category);
+            //foreach (var item in pointMap)
+            //{
+            //    if (item.Key.Contains(index))
+            //    {
+            //        return item.Value;
+            //    }
+            //}
+            //return index;
         }
 
         private IDictionary<IList<int>, int> pointMap = new Dictionary<IList<int>, int>();