[Scilab-users] [EXTERNAL] Re: {EXT} ugly code improvement (with vectorization)

[Carrico, Paul]

Hi Christophe,

Thanks for your suggestion - you were in the right way (good mind), I do not :-)

It works on the test here after, I just have to adapt it

Paul


####################################################################
mode(0)

Elements = [                          
1. 1. 29. 8. 81. 82. 83. 124. 165. 164. 163. 122. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
2. 1. 29. 8. 83. 84. 85. 126. 167. 166. 165. 124. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
3. 1. 29. 8. 85. 86. 87. 128. 169. 168. 167. 126. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
4. 1. 29. 8. 87. 88. 89. 130. 171. 170. 169. 128. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
5. 1. 29. 8. 89. 90. 91. 132. 173. 172. 171. 130. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
797. 1. 8. 20. 2193. 2194. 2195. 2219. 2257. 2256. 2255. 2218. 3515. 3516. 3517. 3541. 3579. 3578. 3577. 3540. 2854. 2856. 2918. 2916. 0 0 0 0 0.
798. 1. 8. 20. 2195. 2196. 2197. 2220. 2259. 2258. 2257. 2219. 3517. 3518. 3519. 3542. 3581. 3580. 3579. 3541. 2856. 2858. 2920. 2918. 0 0 0 0 0.
799. 1. 8. 20. 2197. 2198. 2199. 2221. 2261. 2260. 2259. 2220. 3519. 3520. 3521. 3543. 3583. 3582. 3581. 3542. 2858. 2860. 2922. 2920. 0 0 0 0 0.
800. 1. 8. 20. 2199. 2200. 2201. 2222. 2263. 2262. 2261. 2221. 3521. 3522. 3523. 3544. 3585. 3584. 3583. 3543. 2860. 2862. 2924. 2922. 0 0 0 0 0.
1047. 999. 3. 2. 3587. 3582. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
1048. 999. 3. 2. 3587. 3583. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
1049. 999. 3. 2. 3587. 3584. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
1050. 999. 3. 2. 3587. 3585. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.];

Elements2 = Elements;
Elements2(:,[1:4])=[];
n = size(Elements2,"*")
Elements2 = matrix(Elements2',n,1);
a = find(Elements2 == 0);
Elements2(a,1) = [];
Elements2

 

-----Message d'origine-----
De : users [mailto:users-bounces at lists.scilab.org] De la part de Dang Ngoc Chan, Christophe Envoyé : mardi 27 juin 2017 11:34 À : Users mailing list for Scilab Objet : [EXTERNAL] Re: [Scilab-users] {EXT} ugly code improvement (with vectorization)

Hello Paul,

> De : Carrico, Paul
> Envoyé : mardi 27 juin 2017 09:06
>
> -  to capture the non-null values of each line from the 5th column - each row can have different "length"
> - the 4th column indicates how many values there're i.e the length
> - Then to put this values in a vector previously initialized  [ 
> Elements = [...]
>    1.     1.    29.    8.    81.    82.     83.     124.    165.    164.    163.    122.    0.    0.    0.    0.    0.    0.    0.    0.    0.    0.    0.    0.     0.    0.    0.    0.
[...]

I suggest:

1. Extract foo = Elements(:, 5:$)'

2. Use foo2 = foo(:) to have a vector.

3. Remove the zeros with something like index = (foo2 == 0) ; foo2(index) = []

Would this work?

--
Christophe Dang Ngoc Chan
Mechanical calculation engineer
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