The logic in altwcs.getKeyFromName() was improved to correctly handle the random ordering of keys in the wcsnames dict. This update supports the changes for Ticket #1165.

git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@34873 fe389314-cf27-0410-b35b-8c050e845b92

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/stwcs/wcsutil/altwcs.py b/lib/stwcs/wcsutil/altwcs.py
index 6a2ddbd..7719ce7 100644
--- a/lib/stwcs/wcsutil/altwcs.py
+++ b/lib/stwcs/wcsutil/altwcs.py
@@ -636,10 +636,15 @@ def getKeyFromName(header, wcsname):
     """
     wkey = None
     names = wcsnames(header)
+    wkeys = []
     for item in names.items():
         if item[1].lower() == wcsname.lower():
-            wkey = item[0]
-            break
+            wkeys.append(item[0])
+    wkeys.sort()
+    if len(wkeys) > 0:
+        wkey = wkeys[-1]
+    else:
+        wkey = None
     return wkey
 
 def pc2cd(hdr, key=' '):