[Scilab-users] sparse in Scilab 6.0.0

[Stéphane Mottelet]

Hello,

Sure, this is an UGLY regression which will break a lot of already written code. As far as I am concerned it definitely prevents the port of one of my contribs to 6.0...

S.

> Le 8 juil. 2017 à 10:00, Pinçon Bruno <bruno.pincon at univ-lorraine.fr> a écrit :
> 
>> Le 08/07/2017 à 04:13, Taiji HAGIWARA a écrit :
>> Dear all,
>> 
>> I have a question on "sparse" function in ver.6.0.0
>> Sparse function in ver.6.0.0 returns different answer compared to ver.5.2.2.  I am using Scilab 6.0.0 on Windows 10 (64bit)
>> 
>> When we set same (i,j) factor twice or more,
>> ie.
>> ij=[i1,j1;
>>    i1,j1]
>> v=[a1;
>>    a2]
>> 
>> Scilab 5.5.2 used to return the sum of corresponding value, a1+a2.
>> But Scilab 6.0.0 now returns the last entry, a2.
>> 
>> Is it a bug?
>> Otherwise, is it a intended revision?
> 
>      Hi all,
> 
>    If it is the case, it's for sure a very bad idea : the sum feature
>   of the sparse function is used to build finite element matrices fastly
>   in those softwares (matlab like). At least the usual behavior could be
>  changed by an additionnal option parameter (with the default set to
>  get the old behavior).
> 
>   hth
>  Bruno
> 
> 
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