[vtkusers] vtkGraph::AddVertex segfault

[Aashish Chaudhary]

And this is not a distributed graph?

On Thu, May 13, 2010 at 2:16 PM, Caleb Johnston <cjj37 at cornell.edu> wrote:

> I'm getting a segfault when calling vtkMutableUndirectedGraph::AddVertex.
> However, it does not always occur at the same vertex. Sometimes it is after
> the 2nd vertex. Sometimes it won't happen at all (though rarely). I'm only
> adding about 120 vertices. And the program is not consuming large amounts of
> data so I don't understand why this is happening. Also, this only happens in
> Linux and Windows but not MacOS X. Below, I have included my algorithm for
> adding vertices.
>
> thanks,
> Caleb
>
> ...
> int len = 0;
> double X,Y,Z,Count;
> for(i=0, j=0; j<numberOfLabels; i+=3, j++){
>    X = (double)coords[i];
>    Y = (double)coords[i+1];
>    Z = (double)coords[i+2];
>    Count = (double)centroids[j];
>    if(Count>0.0){
>       X = X / Count;
>       Y = Y / Count;
>       Z = Z / Count;
>       len++;
>       graph->AddVertex();  // crashes here.
>       graph->Update();
>       points->InsertNextPoint(X, Y, Z);
>    }
> }
> ...
>
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-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com
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