Fixed #1585: Allow bar groups to exclude from stacking

HISTORY.md

@@ -24,6 +24,7 @@ http://visjs.org
 
 ### Graph2d
 
+- Fixed #1585: Allow bar groups to exclude from stacking
 - Fixed #1580: Invisible timeline/graph should not be drawn, as most inputs are invalid
 - Fixed #1177: Fix custom range of slaved right axis.
 - Fixed #1592: Emit a "changed" event after each redraw.

lib/timeline/component/GraphGroup.js

@@ -16,7 +16,7 @@ var Points = require('./graph2d_types/points');
  */
 function GraphGroup(group, groupId, options, groupsUsingDefaultStyles) {
   this.id = groupId;
-  var fields = ['sampling', 'style', 'sort', 'yAxisOrientation', 'barChart', 'drawPoints', 'shaded', 'interpolation', 'zIndex'];
+  var fields = ['sampling', 'style', 'sort', 'yAxisOrientation', 'barChart', 'drawPoints', 'shaded', 'interpolation', 'zIndex','excludeFromStacking', 'excludeFromLegend'];
   this.options = util.selectiveBridgeObject(fields, options);
   this.usingDefaultStyle = group.className === undefined;
   this.groupsUsingDefaultStyles = groupsUsingDefaultStyles;
@@ -65,7 +65,7 @@ GraphGroup.prototype.setZeroPosition = function (pos) {
  */
 GraphGroup.prototype.setOptions = function (options) {
   if (options !== undefined) {
-    var fields = ['sampling', 'style', 'sort', 'yAxisOrientation', 'barChart', 'excludeFromLegend', 'excludeFromStacking', 'zIndex'];
+    var fields = ['sampling', 'style', 'sort', 'yAxisOrientation', 'barChart', 'zIndex','excludeFromStacking', 'excludeFromLegend'];
     util.selectiveDeepExtend(fields, this.options, options);
 
     // if the group's drawPoints is a function delegate the callback to the onRender property

lib/timeline/component/graph2d_types/bar.js

@@ -113,7 +113,7 @@ Bargraph.draw = function (groupIds, processedGroupData, framework) {
       drawData = Bargraph._getSafeDrawData(coreDistance, group, minWidth);
       intersections[key].resolved += 1;
 
-      if (group.options.stack === true) {
+      if (group.options.stack === true && group.options.excludeFromStacking !== true) {
         if (combinedData[i].screen_y < group.zeroPosition) {
           heightOffset = intersections[key].accumulatedNegative;
           intersections[key].accumulatedNegative += group.zeroPosition - combinedData[i].screen_y;