From 4fbeb9de992b27d6c1d3359054ee8b45420dbc14 Mon Sep 17 00:00:00 2001
From: Xuan <liuxuan30@gmail.com>
Date: Mon, 22 Jan 2018 02:07:43 +0800
Subject: [PATCH] call setNeedsDisplay() here to trigger render noDataText
 (#3198)

when chart view already rendered, if updating the chartData with nil, it will not rerender, and display the old content
---
 Source/Charts/Charts/ChartViewBase.swift | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Source/Charts/Charts/ChartViewBase.swift b/Source/Charts/Charts/ChartViewBase.swift
index a45eaa2493..b1c6d503ca 100644
--- a/Source/Charts/Charts/ChartViewBase.swift
+++ b/Source/Charts/Charts/ChartViewBase.swift
@@ -198,6 +198,7 @@ open class ChartViewBase: NSUIView, ChartDataProvider, AnimatorDelegate
             
             guard let _data = _data else
             {
+                setNeedsDisplay()
                 return
             }