From 3fad337c9c1d62645d7aee63b4b47406f7c5da07 Mon Sep 17 00:00:00 2001
From: dencheva <dencheva@stsci.edu>
Date: Fri, 19 Aug 2011 17:35:15 +0000
Subject: don't try to update the old idc table keywords if they don't exist
 (as in 'ERR' extensions

git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stsci_python/trunk/stwcs@13642 fe389314-cf27-0410-b35b-8c050e845b92
---
 lib/stwcs/wcsutil/hstwcs.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'lib/stwcs/wcsutil/hstwcs.py')

diff --git a/lib/stwcs/wcsutil/hstwcs.py b/lib/stwcs/wcsutil/hstwcs.py
index 1e0e23d..5aab087 100644
--- a/lib/stwcs/wcsutil/hstwcs.py
+++ b/lib/stwcs/wcsutil/hstwcs.py
@@ -343,7 +343,8 @@ class HSTWCS(WCS):
                 val = self.__getattribute__(c)
             except AttributeError:
                 continue
-            cards.append(pyfits.Card(key=c, value=val))
+            if val:
+                cards.append(pyfits.Card(key=c, value=val))
         return cards
 
     def pc2cd(self):
-- 
cgit