[Octave-bug-tracker] [bug #54736] Behavior of load() when a specified name keyword is missing

[Guillaume]

URL:
  <https://savannah.gnu.org/bugs/?54736>

                 Summary: Behavior of load() when a specified name keyword is
missing
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Wed 26 Sep 2018 04:41:25 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: Guillaume
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

When trying to load a named variable of a mat-file, if it is not present,
Octave returns an error while  Matlab displays a warning and returns an empty
structure.

Octave:


octave> A = pi;
octave> save('A.mat','A');
octave> x = load('A.mat','A')
x =
  scalar structure containing the fields:
    A =  3.1416
octave> x = load('A.mat','B')
error: load: empty name keyword or no data found in file 'A.mat'
octave> x = load('A.mat','A','B')
x =
  scalar structure containing the fields:
    A =  3.1416


Matlab:


>> A = pi;
>> save('A.mat','A');
>> x = load('A.mat','A')
x = 
  struct with fields:
    A: 3.141592653589793
>> x = load('A.mat','B')
Warning: Variable 'B' not found. 
x = 
  struct with no fields.
>> x = load('A.mat','A','B')
Warning: Variable 'B' not found. 
x = 
  struct with fields:
    A: 3.141592653589793






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