From f1a0ea588b8c80369257697bf245af75d6128b9b Mon Sep 17 00:00:00 2001
From: Colin Megill <colinmegill@gmail.com>
Date: Wed, 18 Apr 2018 00:47:16 -0700
Subject: [PATCH] check for expression to avoid race condition asyc

---
 src/components/scatterplot/scatterplot.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/components/scatterplot/scatterplot.js b/src/components/scatterplot/scatterplot.js
index 55102be2..a8b862a2 100644
--- a/src/components/scatterplot/scatterplot.js
+++ b/src/components/scatterplot/scatterplot.js
@@ -100,6 +100,7 @@ class Scatterplot extends React.Component {
   maybeSetupScalesAndDrawAxes(nextProps) {
     if (
       nextProps.expression &&
+      nextProps.expression.data &&
       nextProps.scatterplotXXaccessor &&
       nextProps.scatterplotYYaccessor
     ) {