From 849063c797ed2d79d932f01712175e841711c803 Mon Sep 17 00:00:00 2001
From: George Ke <georgeke@users.noreply.github.com>
Date: Wed, 1 Jun 2016 22:47:22 -0700
Subject: [PATCH] fix world_map appending to old world map when updating (#549)

---
 caravel/assets/visualizations/world_map.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/caravel/assets/visualizations/world_map.js b/caravel/assets/visualizations/world_map.js
index 87f09b30be386..76c991d3a247c 100644
--- a/caravel/assets/visualizations/world_map.js
+++ b/caravel/assets/visualizations/world_map.js
@@ -14,6 +14,7 @@ function worldMapChart(slice) {
     container.css('height', slice.height());
 
     d3.json(slice.jsonEndpoint(), function (error, json) {
+      div.selectAll("*").remove();
       var fd = json.form_data;
 
       if (error !== null) {