[Scilab-users] {EXT} need a more efficient and faster code: suggestions welcome

[Stéphane Mottelet]

Replacing

     MinDist=[MinDist sqrt(min(sum(DIFF.^2,2)))];

by

     MinDist=[MinDist sqrt(min(sum(DIFF.*DIFF,2)))];

will be at least twice faster. Crunching elapsed time could be done by 
using parallel_run (with 5.5.2 version) if you have a multi-core processor.

S.

Le 31/01/2018 à 09:36, Dang Ngoc Chan, Christophe a écrit :
> Hello,
>
> The following suggestions will probably not have a drastic influence
> (I don't see how it could be more vectorised)
> but his a little thing I see:
>
>> De : users [mailto:users-bounces at lists.scilab.org] De la part de Heinz Nabielek
>> Envoyé : mercredi 31 janvier 2018 00:13
>>
>>     MinDist=[MinDist sqrt(min(sum(DIFF.^2,2)))];
> Maybe you could concatenate the squares of the distance
> and then compute the square root of the whole vector in the end:
>
> sqMinDist=[sqMinDist min(sum(DIFF.^2,2))];
>
> …
>
> end
>
> …
>
> MinDist = sqrt(sqMinDist)
>
> Hope this helps,
>
> Regards
>
> --
> Christophe Dang Ngoc Chan
> Mechanical calculation engineer
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-- 
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
http://www.utc.fr/~mottelet