[Octave-bug-tracker] [bug #29947] ancestor (h_vector, "axes") returns an empty matrix

[Ben Abbott]

URL:
  <http://savannah.gnu.org/bugs/?29947>

                 Summary: ancestor (h_vector, "axes") returns an empty matrix
                 Project: GNU Octave
            Submitted by: bpabbott
            Submitted on: Sun 23 May 2010 11:47:37 AM EDT
                Category: None
                Severity: 3 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Ben Abbott
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Mac OS

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Details:

In matlab, the follow returns

>> figure(1)
>> clf
>> x = 0:0.1:10;
>> h = plot (x, sin(x), x, cos(x));
>> ax = ancestor (h, 'axes')

    [170]
    [170]

>> whos ax
  Name      Size            Bytes  Class    Attributes

  ax        2x1               136  cell    

Octave returns

octave:36> ax = ancestor (h, 'axes')
ax = [](0x0)





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