From 1a649bf0e195a5af46dd3f451fc4408ce4b6af75 Mon Sep 17 00:00:00 2001
From: Michael Rivera <mrivera.lee@gmail.com>
Date: Sat, 11 Feb 2017 23:57:14 -0500
Subject: [PATCH] Fix crash when clearing SimpleXYSeries with ArrayFormat
 SimpleXYSeries.ArrayFormat.Y_VALS_ONLY

---
 .../src/main/java/com/androidplot/xy/SimpleXYSeries.java      | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/androidplot-core/src/main/java/com/androidplot/xy/SimpleXYSeries.java b/androidplot-core/src/main/java/com/androidplot/xy/SimpleXYSeries.java
index f5ed5458..f346694a 100644
--- a/androidplot-core/src/main/java/com/androidplot/xy/SimpleXYSeries.java
+++ b/androidplot-core/src/main/java/com/androidplot/xy/SimpleXYSeries.java
@@ -341,7 +341,9 @@ public LinkedList<Number> getyVals() {
     public void clear() {
         lock.writeLock().lock();
         try {
-            xVals.clear();
+            if (xVals != null) {
+              xVals.clear();
+            }
             yVals.clear();
         } finally {
             lock.writeLock().unlock();