From 1edac972bf06ee79971288b9e242e0eecad54630 Mon Sep 17 00:00:00 2001
From: Jake McGuire <mcguireghs@gmail.com>
Date: Thu, 3 Dec 2015 14:40:29 -0800
Subject: [PATCH] Bugfix: Define optional 'properties' property if not present

GeoJSON Point features require  and  properties, but  is optional. The current  method assumes that  will exist and errors on the  assignment if  is not present. This fix initializes  as an empty object if not present so the assignment on the next line should always work.
---
 WebGLLayer.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/WebGLLayer.js b/WebGLLayer.js
index b63e765..5388c7f 100644
--- a/WebGLLayer.js
+++ b/WebGLLayer.js
@@ -469,6 +469,7 @@ WebGLLayer.prototype.loadPointData = function(feature, geometry){
   this.features_.points.floats.push(xy[1]);
   this.features_.points.floats.push(WebGLLayer.packColor(this.features_.points.defaultColor));
 
+  if (!feature.hasOwnProperty('properties')) feature.properties = {};
   feature.properties.index = this.features_.points.count++;
 
   this.features_.points.changed = true;