Re: specifying one matrix index instead of two

[c.]

On 30 Jun 2012, at 00:49, Sergei Steshenko wrote:

> Hello,
> 
> in octave-3.6.2 I see:
> 
> "
> octave:1> foo = [1 2 3; 4 5 6]
> foo =
> 
>    1   2   3
>    4   5   6
> 
> octave:2> foo(1)
> ans =  1
> octave:3> foo(2)
> ans =  4
> octave:4> foo(2, :)
> ans =
> 
>    4   5   6
> 
> octave:5> foo(1, :)
> ans =
> 
>    1   2   3
> 
> octave:6> 
> 
> ".
> 
> My question is regarding output of 'foo(1)', 'foo(2)' - my expectation is 
> more or less an error message rather than output of foo(1,1), foo(2,1) 
> respectively.
> 
> Is it because of compatibility with Matlab ?

Yes.

> ...
> 
> My point is that at the moment I am adding a dimension (vector -> 2d matrix), 
> so I'd rather receive an error message in case I forget to add index, i.e. in 
> case I forget to convert bar(L) -> bar(K,L).
> 
> Thanks,
>   Sergei.