From 9762cfbed615e37f429d200e5211b246e321772e Mon Sep 17 00:00:00 2001
From: Olivier Corradi <olivier.corradi@gmail.com>
Date: Sun, 24 Sep 2017 15:23:44 +0200
Subject: [PATCH] Properly shows arrows with null intensity

---
 web/app/exchangelayer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/web/app/exchangelayer.js b/web/app/exchangelayer.js
index 07075de1d1..e660025df3 100644
--- a/web/app/exchangelayer.js
+++ b/web/app/exchangelayer.js
@@ -77,7 +77,7 @@ ExchangeLayer.prototype.render = function() {
         .select('img')
         .attr('src', function (d) {
             var intensity = Math.min(maxCarbonIntensity, Math.floor(d.co2intensity - d.co2intensity%arrowCarbonIntensitySliceSize));
-            if(isNaN(intensity)) intensity = 'nan';
+            if(d.co2intensity == null || isNaN(intensity)) intensity = 'nan';
             return 'images/arrow-'+intensity+'-animated-'+that.exchangeAnimationDurationScale(Math.abs(d.netFlow || 0))+'.gif';
         });
     }