Re: Matlab logical test case

[Juan Pablo Carbajal]

On Sun, Mar 2, 2014 at 7:20 PM, Rik <address@hidden> wrote:
> On 03/02/2014 10:13 AM, John W. Eaton wrote:
>> On 02/28/2014 05:19 PM, Juan Pablo Carbajal wrote:
>>> On Fri, Feb 28, 2014 at 11:12 PM, Rik <address@hidden> wrote:
>>>> x = [-1, 0, i]
>>>> logical (x)
>>> ??? Error using ==> logical
>>> Complex values cannot be converted to logicals.
>>
>> I don't know why they wouldn't just convert any value with a non-zero
>> magnitude to TRUE.  Is there some undesirable consequence of using that
>> definition?
>>
>
> I don't think so, and Octave's definition makes more sense to me.  In the
> end, I just documented that there was a difference.  The docstring for
> logical is now:
>
> -- Built-in Function:  logical (X)
>      Convert the numeric object X to logical type.
>
>      Any non-zero values will be converted to true (1) while zero values
>      will be converted to false (0).  The non-numeric value NaN cannot
>      be converted and will produce an error.
>
>      Compatibility Note: Octave accepts complex values as input, whereas
>      MATLAB issues an error.
>
>      See also: double, single, char.
>
> --Rik

Bold! I like it.