Re: numel(foo{:}) - feature or bug ?

[PhilipNienhuis]

Sergei Steshenko-2 wrote:
> 
> --- On Fri, 8/5/11, Martin.Hepperle <address@hidden> wrote:
> 
>> From: Martin.Hepperle <address@hidden>
>> Subject: Re: numel(foo{:}) - feature or bug ?
>> To: address@hidden
>> Date: Friday, August 5, 2011, 5:13 AM
>> Hmmm...this is what I get under
>> Windows ("official" MINGW binary):
>> 
>> octave-3.2.4.exe:53> foo
>> foo =
>> 
>> {
>>   [1,1] = a
>>   [1,2] = ab
>>   [1,3] = abc
>>   [1,4] =
>> 
>>       1    2    3 
>>   4
>>       5    6    7 
>>   8
>>      
>> 9   10   11   12
>> 
>> }
>> 
>> octave-3.2.4.exe:54> numel(foo)
>> ans =  4
>> octave-3.2.4.exe:55> numel(foo{:})
>> error: Invalid call to numel.  Correct usage is:
> 
> <snip>
> 
> Please note that:
> 
> 1) you are using version 3.2.4 while I am using 3.4.2, i.e. mine is later;
> 2) I run Linux while you Windows.
> 
> Anyway, I think 2) is irrelevant is this case, i.e. I think it's a
> regression in 3.4.2 rather than Linux <-> Windows issue.
> 

On Windows, using Tatsuro's 3.4.2. binary, it goes like this:


GNU Octave, version 3.4.2
Copyright (C) 2011 John W. Eaton and others.
This is free software; see the source code for copying conditions.
There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  For details, type `warranty'.
:
Octave was configured for "i686-pc-mingw32".
:
<snip>

octave.exe:1> foo = {'a'}
foo =
{
  [1,1] = a
}
octave.exe:2> foo{2} = 'bc'
foo =
{
  [1,1] = a
  [1,2] = bc
}
octave.exe:3> foo{3} = 'bcd'
foo =
{
  [1,1] = a
  [1,2] = bc
  [1,3] = bcd
}
octave.exe:4> foo{4} = rand(4,4)
foo =
{
  [1,1] = a
  [1,2] = bc
  [1,3] = bcd
  [1,4] =

     0.946214   0.483896   0.964641   0.845847
     0.066998   0.897528   0.972649   0.099501
     0.423324   0.309595   0.964653   0.515342
     0.401630   0.106199   0.283850   0.831350

}
octave.exe:5> numel (foo)
ans =  4                               ## What I expected
octave.exe:6> numel(foo{:})
ans =  96                             ## Hmmm.....
octave.exe:7>

Go figure....

Philip

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