The code is not that compilable without Qt, VTK, ITK, and Cmake installed. It is publicly hosted at SourceForge:<div><a href="http://sourceforge.net/projects/glassbrain/">http://sourceforge.net/projects/glassbrain/</a></div>
<div><br></div><div>And the stack trace shows the problem arrises from the AddVertex call.<br><br><div class="gmail_quote">On Thu, May 13, 2010 at 2:25 PM, David Doria <span dir="ltr"><<a href="mailto:daviddoria%2Bvtk@gmail.com">daviddoria+vtk@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div><div></div><div class="h5">On Thu, May 13, 2010 at 2:16 PM, Caleb Johnston <<a href="mailto:cjj37@cornell.edu">cjj37@cornell.edu</a>> wrote:<br>
> I'm getting a segfault when calling vtkMutableUndirectedGraph::AddVertex.<br>
> However, it does not always occur at the same vertex. Sometimes it is after<br>
> the 2nd vertex. Sometimes it won't happen at all (though rarely). I'm only<br>
> adding about 120 vertices. And the program is not consuming large amounts of<br>
> data so I don't understand why this is happening. Also, this only happens in<br>
> Linux and Windows but not MacOS X. Below, I have included my algorithm for<br>
> adding vertices.<br>
> thanks,<br>
> Caleb<br>
> ...<br>
> int len = 0;<br>
> double X,Y,Z,Count;<br>
> for(i=0, j=0; j<numberOfLabels; i+=3, j++){<br>
> X = (double)coords[i];<br>
> Y = (double)coords[i+1];<br>
> Z = (double)coords[i+2];<br>
> Count = (double)centroids[j];<br>
> if(Count>0.0){<br>
> X = X / Count;<br>
> Y = Y / Count;<br>
> Z = Z / Count;<br>
> len++;<br>
> graph->AddVertex(); // crashes here.<br>
> graph->Update();<br>
> points->InsertNextPoint(X, Y, Z);<br>
> }<br>
> }<br>
> ...<br>
<br>
</div></div>I've used this in Linux plenty of times with no problems. If you post<br>
some compilable code I can see if it works on my machine. My initial<br>
bet is that something is going wrong around there, like accessing out<br>
of bounds elements in coords or centroids.<br>
<br>
Thanks,<br>
<font color="#888888"><br>
David<br>
</font></blockquote></div><br></div>