JavaScriptCollection
diff --git a/‎d3.js‎
Lines changed: 7 additions & 7 deletions b/‎d3.js‎
Lines changed: 7 additions & 7 deletions
diff --git a/‎d3.min.js‎
Lines changed: 2 additions & 2 deletions b/‎d3.min.js‎
Lines changed: 2 additions & 2 deletions
diff --git a/‎src/geom/quadtree.js‎
Lines changed: 10 additions & 7 deletions b/‎src/geom/quadtree.js‎
Lines changed: 10 additions & 7 deletions
diff --git a/‎test/geom/quadtree-test.js‎
Lines changed: 3 additions & 0 deletions b/‎test/geom/quadtree-test.js‎
Lines changed: 3 additions & 0 deletions
@@ -4590,14 +4590,14 @@ d3 = function() {
     quadtree.y = function(_) {
       return arguments.length ? (y = _, quadtree) : y;
     };
+    quadtree.extent = function(_) {
+      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
+      if (_ == null) x1 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], y2 = +_[1][1];
+      return quadtree;
+    };
     quadtree.size = function(_) {
-      if (!arguments.length) return x1 == null ? null : [ x2, y2 ];
-      if (_ == null) {
-        x1 = y1 = x2 = y2 = null;
-      } else {
-        x1 = y1 = 0;
-        x2 = +_[0], y2 = +_[1];
-      }
+      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
+      if (_ == null) x1 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
       return quadtree;
     };
     return quadtree;
 
@@ -147,14 +147,17 @@ d3.geom.quadtree = function(points, x1, y1, x2, y2) {
     return arguments.length ? (y = _, quadtree) : y;
   };
 
+  quadtree.extent = function(_) {
+    if (!arguments.length) return x1 == null ? null : [[x1, y1], [x2, y2]];
+    if (_ == null) x1 = y1 = x2 = y2 = null;
+    else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], y2 = +_[1][1];
+    return quadtree;
+  };
+
   quadtree.size = function(_) {
-    if (!arguments.length) return x1 == null ? null : [x2, y2];
-    if (_ == null) {
-      x1 = y1 = x2 = y2 = null;
-    } else {
-      x1 = y1 = 0;
-      x2 = +_[0], y2 = +_[1];
-    }
+    if (!arguments.length) return x1 == null ? null : [x2 - x1, y2 - y1];
+    if (_ == null) x1 = y1 = x2 = y2 = null;
+    else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
     return quadtree;
   };
 
 
@@ -14,6 +14,9 @@ suite.addBatch({
       "has no defined size": function(q) {
         assert.isNull(q.size());
       },
+      "has no defined extent": function(q) {
+        assert.isNull(q.extent());
+      },
       "has the default x-accessor, d[0]": function(q) {
         assert.strictEqual(q.x()([42, 43]), 42);
       },