From e3ccac51c57d5068ed9aede1829bc90539b84738 Mon Sep 17 00:00:00 2001
From: Ricky Reusser <rsreusser@gmail.com>
Date: Tue, 6 Sep 2016 12:30:36 -0600
Subject: [PATCH] Throw an error when redraw called on invalid gd

---
 src/plot_api/plot_api.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/plot_api/plot_api.js b/src/plot_api/plot_api.js
index 7046e3adcc7..15d51de7604 100644
--- a/src/plot_api/plot_api.js
+++ b/src/plot_api/plot_api.js
@@ -823,8 +823,7 @@ Plotly.redraw = function(gd) {
     gd = getGraphDiv(gd);
 
     if(!Lib.isPlotDiv(gd)) {
-        Lib.warn('This element is not a Plotly plot.', gd);
-        return;
+        throw new Error('This element is not a Plotly plot: ' + gd);
     }
 
     gd.calcdata = undefined;