[Scilab-users] Finding elements occurring once in a matrix

[Izabela Wójcik-Grząba]

Raphael, Stephane,

Thanks a lot for your quick reaction and help.

Best regards,
Iza





W dniu 05.07.2019 20:23, Rafael Guerra napisał(a):
> Try the following, without loops, inspired by a solution by B. Mohandes 
> :
> 
> --> x = [1.1 1.1 3.2; 2.3 1.1 1.1; 4.7 5.2 5.2]
>  x  =
>    1.1   1.1   3.2
>    2.3   1.1   1.1
>    4.7   5.2   5.2
> 
> --> y = unique(x); y0 = [min(y)-1; y]; y(find(histc(y0,x(:),%F)==1))
>  ans  =
>    2.3
>    3.2
>    4.7
> 
> Regards,
> Rafael
> 
> -----Original Message-----
> From: users <users-bounces at lists.scilab.org> On Behalf Of Stéphane 
> Mottelet
> Sent: Friday, July 5, 2019 7:24 PM
> To: users at lists.scilab.org
> Subject: Re: [Scilab-users] Finding elements occuring once in a matrix
> 
> Hello,
> 
> Maybe not optimal, but does the job:
> 
> x = [1 1 3
> 2 1 1
> 4 5 5];
> 
> f = [];
> for y=unique(x(:))'
>    if length(find(x==y)) == 1
>     f = [f y];
>    end
> end
> 
> --> f
>   f  =
> 
>     2.   3.   4.
> 
> S.
> 
> Le 05/07/2019 à 18:03, Izabela Wójcik-Grząba a écrit :
>> Hello,
>> 
>> Is there a simple way of finding elements of matrix which occurs only
>> once. For example in this matrix it would be 3 and 4:
>> [1 1 3
>> 2 1 1
>> 4 5 5]
>> 
>> For the time being I couldn't find any smart idea for that. Could you
>> help?
>> 
>> Kind regards,
>> Iza