From 78ae9a3e169697c12453e4d6d2fc66e4ca6ca0e9 Mon Sep 17 00:00:00 2001
From: Tom MacWright <tom@macwright.org>
Date: Thu, 28 Mar 2013 17:24:11 -0400
Subject: [PATCH] Do not set NaN extent when there is no GPX

---
 js/id/ui/background.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/js/id/ui/background.js b/js/id/ui/background.js
index b00a6066e..959daa003 100644
--- a/js/id/ui/background.js
+++ b/js/id/ui/background.js
@@ -224,8 +224,13 @@ iD.ui.Background = function(context) {
             .on('click', function() {
                 d3.event.preventDefault();
                 d3.event.stopPropagation();
-                context.map()
-                    .extent(d3.geo.bounds(context.map().layers[1].geojson()))
+                if (context.map().layers[1].geojson().type) {
+                    context.map()
+                        .extent(d3.geo.bounds(context
+                            .map()
+                            .layers[1]
+                            .geojson()));
+                }
             })
             .append('span')
                 .attr('class', 'icon geocode' );