From b9f84cb2ae120f9920ddf0b14f92ee86b2a3b72b Mon Sep 17 00:00:00 2001
From: Maxime Beauchemin <maximebeauchemin@gmail.com>
Date: Fri, 27 Apr 2018 22:51:02 +0000
Subject: [PATCH] Fix 'Uncaught TypeError: pe.clamp is not a function'

---
 superset/assets/src/visualizations/nvd3_vis.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/superset/assets/src/visualizations/nvd3_vis.js b/superset/assets/src/visualizations/nvd3_vis.js
index d78bf2f71441e..068b8a0b55693 100644
--- a/superset/assets/src/visualizations/nvd3_vis.js
+++ b/superset/assets/src/visualizations/nvd3_vis.js
@@ -602,7 +602,9 @@ export default function nvd3Vis(slice, payload) {
           xMax = chart.xAxis.scale().domain()[1].valueOf();
           xScale = chart.xScale ? chart.xScale() : d3.scale.linear();
         }
-        xScale.clamp(true);
+        if (xScale && xScale.clamp) {
+          xScale.clamp(true);
+        }
 
         if (Array.isArray(formulas) && formulas.length) {
           const xValues = [];