fix and comment on bar positionFn passVal

plotly · Feb 19, 2018 · ad38f8d · ad38f8d
1 parent a2fc07a
commit ad38f8d
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/traces/bar/hover.js b/src/traces/bar/hover.js
@@ -52,8 +52,10 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
         };
 
     function _positionFn(_minPos, _maxPos) {
+        // add a little to the pseudo-distance for wider bars, so that like scatter,
+        // if you are over two overlapping bars, the narrower one wins.
         return Fx.inbox(_minPos - posVal, _maxPos - posVal,
-            maxHoverDistance - Math.min(1, Math.abs(_maxPos - _minPos) / pRangeCalc));
+            maxHoverDistance + Math.min(1, Math.abs(_maxPos - _minPos) / pRangeCalc) - 1);
     }
 
     function positionFn(di) {