From 6648db031e2d578fe40dcd60de14123d0f92b7e5 Mon Sep 17 00:00:00 2001
From: Kevin Newman <47572615+kevinanewman@users.noreply.github.com>
Date: Wed, 17 Jul 2019 08:37:16 -0400
Subject: [PATCH] Update LegendItem.py

Propose adding a clear() method (or equivalent) for easier legend re-use with dynamically updated plots...
---
 pyqtgraph/graphicsItems/LegendItem.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pyqtgraph/graphicsItems/LegendItem.py b/pyqtgraph/graphicsItems/LegendItem.py
index efb700a1..ce5bd883 100644
--- a/pyqtgraph/graphicsItems/LegendItem.py
+++ b/pyqtgraph/graphicsItems/LegendItem.py
@@ -101,6 +101,15 @@ class LegendItem(GraphicsWidget, GraphicsWidgetAnchor):
                 label.close()
                 self.updateSize()                       # redraq box
 
+    def clear(self):
+        """
+        Removes all items from the legend.
+
+        Useful for reusing and dynamically updating charts and their legends.
+        """
+        while self.items != []:
+            self.removeItem(self.items[0][1].text)
+                
     def updateSize(self):
         if self.size is not None:
             return