From 0f68d7259ec85b01f2aa71fd382a9b97b41c8d9e Mon Sep 17 00:00:00 2001
From: Mike Bostock <mbostock@gmail.com>
Date: Sat, 23 Apr 2016 08:43:59 -0700
Subject: [PATCH] Reset link force when links change.

---
 src/link.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/link.js b/src/link.js
index 7968670..a62c858 100644
--- a/src/link.js
+++ b/src/link.js
@@ -70,7 +70,7 @@ export default function(links) {
   };
 
   force.links = function(_) {
-    return arguments.length ? (links = _, initialize(), force) : links;
+    return arguments.length ? (links = _, strengths = distances = null, initialize(), force) : links;
   };
 
   force.id = function(_) {