[Octave-bug-tracker] [bug #32642] Obscure warnings when accessing graphics object properties

[Guillaume]

URL:
  <http://savannah.gnu.org/bugs/?32642>

                 Summary: Obscure warnings when accessing graphics object
properties
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Tue 01 Mar 2011 19:44:49 GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: Guillaume
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

If a graphics object handle is empty, trying to access a property displays a
warning that might be confusing:


octave> a=[]
a = [](0x0)
octave> get(a,'x')
warning: implicit conversion from matrix to real vector
ans = [](0x0)
octave> get([],'x')
warning: implicit conversion from null_matrix to real vector
ans = [](0x0)


Silently returning an empty matrix seems enough.




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