From 7c5bc8d90ce42bb8f8fd245ed4bf198baee25e8c Mon Sep 17 00:00:00 2001
From: Grace Guo <grace.guo@airbnb.com>
Date: Thu, 15 Mar 2018 15:06:41 -0700
Subject: [PATCH] fix mapbox viz (#4621)

---
 superset/assets/visualizations/mapbox.jsx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/superset/assets/visualizations/mapbox.jsx b/superset/assets/visualizations/mapbox.jsx
index b5050f10ff..baea634285 100644
--- a/superset/assets/visualizations/mapbox.jsx
+++ b/superset/assets/visualizations/mapbox.jsx
@@ -65,7 +65,7 @@ class ScatterPlotGlowOverlay extends React.Component {
     const canvas = this.refs.overlay;
     const ctx = canvas.getContext('2d');
     const radius = props.dotRadius;
-    const mercator = ViewportMercator(props);
+    const mercator = new ViewportMercator(props);
     const rgb = props.rgb;
     const clusterLabelMap = [];
     let maxLabel = -1;
@@ -264,7 +264,7 @@ class MapboxViz extends React.Component {
   }
 
   render() {
-    const mercator = ViewportMercator({
+    const mercator = new ViewportMercator({
       width: this.props.sliceWidth,
       height: this.props.sliceHeight,
       longitude: this.state.viewport.longitude,