From 2bf6808810d377ce53142b7e5ef3d96e08f82f32 Mon Sep 17 00:00:00 2001
From: Vanya Belyaev <ivan.belyaev@cern.ch>
Date: Thu, 2 May 2024 17:06:16 +0200
Subject: [PATCH]  update canvas atthe exit

---
 ostap/plotting/canvas.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/ostap/plotting/canvas.py b/ostap/plotting/canvas.py
index fcc814df..6fed101e 100755
--- a/ostap/plotting/canvas.py
+++ b/ostap/plotting/canvas.py
@@ -1066,8 +1066,10 @@ def __enter__ ( self ) :
     ## context manager: exit 
     def __exit__ ( self , *_ ) :
 
-        if self.__cnv and self.__plot :
-            self.__cnv >> self.__plot 
+        if self.__cnv :
+            self.__cnv.Update()            
+            if self.__plot :
+                self.__cnv >> self.__plot 
                     
         KeepCanvas.__exit__ ( self , *_ ) 
         self.__cnv = None