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Re: [igraph] matrix problem


From: Gábor Csárdi
Subject: Re: [igraph] matrix problem
Date: Mon, 11 Oct 2010 23:00:41 +0200

On Mon, Oct 11, 2010 at 10:49 PM, Guilherme Ferraz de Arruda
<address@hidden> wrote:
> dados is just a struct:
>
> typedef struct Matriz{
>  double** Matriz;
>  int i, j;
> }Mat;
>
>
> int CriaRede(igraph_t* grafo, int dist, Mat* dados){
>  igraph_matrix_t w_adj;
>
>  printf("   - Inicializando WAdj ... \t");
>  igraph_matrix_init(&w_adj, (long int)dados->i, (long int)dados->i);
>  printf("[ OK ]\n");
>
> ...
>
> }
>
> Is it enough?
> If its not, i could send all of my code, its dificult to send parts of them.

No, it is not enough. It is best to have some small piece of self
contained code that we can compile and run, and demonstrates the
problem. Otherwise one can only make guesses.....

Gabor

> Thanks for all.
>
> Guilherme.
>
> 2010/10/11 Tamas Nepusz <address@hidden>:
>> Dear Guilherme,
>>
>> Please send a short, self-contained example with which we can reproduce the 
>> problem. There seems to be nothing wrong with your code at first glance, but 
>> since we don't know what "dados" is and what's in there, we can't really 
>> determine what is causing the problem.
>>
>> --
>> Tamas
>>
>> On 11 Oct 2010, at 21:22, Guilherme Ferraz de Arruda wrote:
>>
>>> Hi,
>>> I have used:
>>>
>>> igraph_matrix_t w_adj;
>>> igraph_matrix_init(&w_adj, (long int)dados->i, (long int)dados->i);
>>>
>>> where dados->i = 151.
>>>
>>> But i got Segmentation Fault.
>>> What is wrong?
>>>
>>> i tried to use
>>> igraph_matrix_init(&w_adj, 151, 151);
>>>
>>> and got the same error.
>>>
>>> What is wrong?
>>> it seens to be so simple to have an erros, but i got this error at
>>> this line by debugging.
>>>
>>> Thanks for all.
>>>
>>> Guilherme.
>>>
>>> _______________________________________________
>>> igraph-help mailing list
>>> address@hidden
>>> http://lists.nongnu.org/mailman/listinfo/igraph-help
>>
>>
>> _______________________________________________
>> igraph-help mailing list
>> address@hidden
>> http://lists.nongnu.org/mailman/listinfo/igraph-help
>>
>
> _______________________________________________
> igraph-help mailing list
> address@hidden
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>



-- 
Gabor Csardi <address@hidden>     UNIL DGM



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