From 765ca5a62b88eb94bf64dfe32f1eb364d5aff0cb Mon Sep 17 00:00:00 2001
From: archmoj <mojtaba@plot.ly>
Date: Fri, 26 Jul 2019 11:07:16 -0400
Subject: [PATCH] avoid log 0

---
 src/plots/cartesian/axes.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/plots/cartesian/axes.js b/src/plots/cartesian/axes.js
index 423a856809c..30eaf41a153 100644
--- a/src/plots/cartesian/axes.js
+++ b/src/plots/cartesian/axes.js
@@ -839,7 +839,7 @@ function autoTickRound(ax) {
         // 2 digits past largest digit of dtick
         ax._tickround = 2 - Math.floor(Math.log(dtick) / Math.LN10 + 0.01);
 
-        var maxend = Math.max(Math.abs(rng[0]), Math.abs(rng[1]));
+        var maxend = Math.max(Math.abs(rng[0]), Math.abs(rng[1])) || 1;
 
         var rangeexp = Math.floor(Math.log(maxend) / Math.LN10 + 0.01);
         if(Math.abs(rangeexp) > 3) {