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Re: ode csets


From: c.
Subject: Re: ode csets
Date: Thu, 20 Oct 2016 00:38:26 +0200

On 20 Oct 2016, at 00:05, c. <address@hidden> wrote:

> 
> On 19 Oct 2016, at 21:01, Rik <address@hidden> wrote:
> 
>> One question is the sort order for default options.  Whenever a default
>> option is changed, it moves to the front of the list.  That is probably
>> something happening in inputParser, but I'm not sure I like it.  Does
>> anyone on the octave-maintainer's list have an opinion?  Example:
>> 
>> +verbatim+
>> odeset ("Vectorized", 1, "FooProp2", 2, "FooProp1", 1)
>> ans =
>> 
>> scalar structure containing the fields:
>> 
>>   Vectorized =  1
>>   AbsTol = [](0x0)
>>   BDF = [](0x0)
>>   Events = [](0x0)
>>   InitialSlope = [](0x0)
>>   InitialStep = [](0x0)
>>   JConstant = [](0x0)
>>   JPattern = [](0x0)
>>   Jacobian = [](0x0)
>>   MStateDependence = [](0x0)
>>   Mass = [](0x0)
>>   MassSingular = [](0x0)
>>   MaxOrder = [](0x0)
>>   MaxStep = [](0x0)
>>   MvPattern = [](0x0)
>>   NonNegative = [](0x0)
>>   NormControl = [](0x0)
>>   OutputFcn = [](0x0)
>>   OutputSel = [](0x0)
>>   Refine = [](0x0)
>>   RelTol = [](0x0)
>>   Stats = [](0x0)
>>   FooProp1 =  1
>>   FooProp2 =  2
>> -verbatim-
> 
> 
> I would say this is a compatibility bug in inputParser that should be fixed 
> there:
> 
> -- Matlab test --
>>> ip = inputParser ();
>>> ip.addParameter ('a', 1);
>>> ip.addParameter ('b', 2);
>>> ip.parse ('b', 2, 'a', 2);
>>> ip.Results
> 
> ans = 
> 
>    a: 2
>    b: 2
> -- end Matlab test --
> 
> while in Octave
> 
> -- Octave test --
>>> ip = inputParser ();
>>> ip.addParameter ('a', 1);
>>> ip.addParameter ('b', 2);
>>> ip.parse ('b', 2, 'a', 2)
>>> ip.Results
> ans =
> 
>  scalar structure containing the fields:
> 
>    b =  2
>    a =  2
> -- end Octave test --
> 
> but I don't think this is very important as 
> 
> -- Octave test --
>>> isequal (struct ('a', 2, 'b', 2), struct ('b', 2, 'a', 2))
> ans = 1
> -- end Octave test --
> 
> and the same also holds true in Matlab 2016a (though, IIRC, the behaviour in 
> Matlab was different in older releases).
> 
> I would suggest to submit a bug for inputParser and fix the behaviour there 
> but I don't think this is very high priority ...
> 
> c.


bug submitted here:
https://savannah.gnu.org/bugs/index.php?49389

c.





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