diff --git a/docs/graph2d/index.html b/docs/graph2d/index.html
index 18e8ad67..94131646 100644
--- a/docs/graph2d/index.html
+++ b/docs/graph2d/index.html
@@ -741,7 +741,7 @@ onRender: function(item, group, graph2d) {
             <td>stack</td>
             <td>Boolean</td>
             <td>true</td>
-            <td>If stack is enabled, the graphs will be stacked upon eachother when applicable. This currently only works with bar graphs but linegraph support is being worked on.</td>
+            <td>If stack is enabled, the graphs will be stacked upon each-other when applicable. A group can opt-out of stacking through the "excludeFromStacking" option.</td>
         </tr>
         <tr class='toggle collapsible' onclick="toggleTable('g2dOptions','shaded', this);">
             <td class="greenField"><span parent="shaded" class="right-caret"></span> shaded</td>
@@ -794,7 +794,13 @@ onRender: function(item, group, graph2d) {
             <td class="greenField">excludeFromLegend</td>
             <td>Boolean</td>
             <td>false</td>
-            <td>Group option only. Excludes the the group from beeing listed in the legend.</td>
+            <td>Group option only. Excludes the group from being listed in the legend.</td>
+        </tr>
+        <tr>
+            <td class="greenField">excludeFromStacking</td>
+            <td>Boolean</td>
+            <td>false</td>
+            <td>Group option only. Excludes the group from being included in the stacking.</td>
         </tr>
     </table>
 
diff --git a/lib/timeline/Graph2d.js b/lib/timeline/Graph2d.js
index b94b9522..cae83d24 100644
--- a/lib/timeline/Graph2d.js
+++ b/lib/timeline/Graph2d.js
@@ -217,7 +217,7 @@ Graph2d.prototype.getLegend = function(groupId, width, height) {
     return this.linegraph.groups[groupId].getLegend(width,height);
   }
   else {
-    return "cannot find group:" +  groupId;
+    return "cannot find group:'" +  groupId + "'";
   }
 };
 
diff --git a/lib/timeline/component/GraphGroup.js b/lib/timeline/component/GraphGroup.js
index 910ccb16..b8c2b08f 100644
--- a/lib/timeline/component/GraphGroup.js
+++ b/lib/timeline/component/GraphGroup.js
@@ -73,7 +73,7 @@ GraphGroup.prototype.setZeroPosition = function (pos) {
  */
 GraphGroup.prototype.setOptions = function (options) {
   if (options !== undefined) {
-    var fields = ['sampling', 'style', 'sort', 'yAxisOrientation', 'barChart', 'excludeFromLegend'];
+    var fields = ['sampling', 'style', 'sort', 'yAxisOrientation', 'barChart', 'excludeFromLegend', 'excludeFromStacking'];
     util.selectiveDeepExtend(fields, this.options, options);
 
     // if the group's drawPoints is a function delegate the callback to the onRender property
diff --git a/lib/timeline/component/LineGraph.js b/lib/timeline/component/LineGraph.js
index 557c76c4..3fda715f 100644
--- a/lib/timeline/component/LineGraph.js
+++ b/lib/timeline/component/LineGraph.js
@@ -89,7 +89,7 @@ function LineGraph(body, options) {
     }
   };
 
-  // options is shared by this ItemSet and all its items
+  // options is shared by this lineGraph and all its items
   this.options = util.extend({}, this.defaultOptions);
   this.dom = {};
   this.props = {};
@@ -643,10 +643,25 @@ LineGraph.prototype._updateGraph = function () {
         this.abortedGraphUpdate = false;
 
         // With the yAxis scaled correctly, use this to get the Y values of the points.
+        var below = undefined;
         for (i = 0; i < groupIds.length; i++) {
           group = this.groups[groupIds[i]];
-          if (this.options.stack === true && this.options.style === 'line' && i > 0) {
-            this._stack(groupsData[groupIds[i]], groupsData[groupIds[i - 1]]);
+          if (this.options.stack === true && this.options.style === 'line') {
+            if (group.options.excludeFromStacking == undefined || !group.options.excludeFromStacking) {
+              if (below != undefined) {
+                this._stack(groupsData[group.id], groupsData[below.id]);
+                if (group.options.shaded.enabled == true && group.options.shaded.orientation !== "group"){
+                  if (group.options.shaded.orientation == "top" && below.options.shaded.orientation !== "group"){
+                    below.options.shaded.orientation="group";
+                    below.options.shaded.groupId=group.id;
+                  } else {
+                    group.options.shaded.orientation="group";
+                    group.options.shaded.groupId=below.id;
+                  }
+                }
+              }
+              below = group;
+            }
           }
           this._convertYcoordinates(groupsData[groupIds[i]], group);
         }
@@ -780,8 +795,8 @@ LineGraph.prototype._getRelevantData = function (groupIds, groupsData, minDate,
       // optimization for sorted data
       if (group.options.sort == true) {
         var first = Math.max(0, util.binarySearchValue(itemsData, minDate, 'x', 'before'));
-        var last = Math.min(itemsData.length, util.binarySearchValue(itemsData, maxDate, 'x', 'after'));
-        if (last < 0) {
+        var last = Math.min(itemsData.length, util.binarySearchValue(itemsData, maxDate, 'x', 'after')+1);
+        if (last <= 0) {
           last = itemsData.length;
         }
         var dataContainer = new Array(last-first);
diff --git a/lib/timeline/component/graph2d_types/line.js b/lib/timeline/component/graph2d_types/line.js
index 4091f237..638e1a6c 100644
--- a/lib/timeline/component/graph2d_types/line.js
+++ b/lib/timeline/component/graph2d_types/line.js
@@ -85,7 +85,7 @@ Line.draw = function (pathArray, group, framework) {
 };
 
 Line.serializePath = function(pathArray,type,inverse){
-    if (pathArray.length <= 2){
+    if (pathArray.length < 2){
         //Too little data to create a path.
         return "";
     }