From c50efe2e5c406b3e11051e821e581faa8a91d40f Mon Sep 17 00:00:00 2001
From: Jordan Kasper <jordan@jordankasper.com>
Date: Thu, 11 Feb 2016 14:52:03 -0500
Subject: [PATCH] PR #1576 -- Fixes issue of trying to flow data when there is
 no data to start (gh-1235)

---
 src/api.flow.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/api.flow.js b/src/api.flow.js
index 69b5f50..2abad3e 100644
--- a/src/api.flow.js
+++ b/src/api.flow.js
@@ -202,7 +202,7 @@ c3_chart_internal_fn.generateFlow = function (args) {
                     translateX = diffDomain(domain) / 2;
                 }
             }
-        } else if (flow.orgDataCount === 1 || flowStart.x === flowEnd.x) {
+        } else if (flow.orgDataCount === 1 || (flowStart && flowStart.x) === (flowEnd && flowEnd.x)) {
             translateX = $$.x(orgDomain[0]) - $$.x(domain[0]);
         } else {
             if ($$.isTimeSeries()) {