From 7fb64b24840c1eaef261376847493328fb2355f6 Mon Sep 17 00:00:00 2001
From: Xuan Liu <liuxuan30@gmail.com>
Date: Mon, 25 Dec 2017 15:08:32 +0800
Subject: [PATCH] fix axis label missing when zoom in deep enough, sometimes
 the label will disappear while scrolling.

---
 Source/Charts/Renderers/AxisRendererBase.swift | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Source/Charts/Renderers/AxisRendererBase.swift b/Source/Charts/Renderers/AxisRendererBase.swift
index bd1c6aa466..b587d7b12e 100644
--- a/Source/Charts/Renderers/AxisRendererBase.swift
+++ b/Source/Charts/Renderers/AxisRendererBase.swift
@@ -163,7 +163,11 @@ open class AxisRendererBase: Renderer
                     n += 1
                 }
             }
-            
+            else if last == first && n == 0
+            {
+                n = 1
+            }
+
             // Ensure stops contains at least n elements.
             axis.entries.removeAll(keepingCapacity: true)
             axis.entries.reserveCapacity(labelCount)