Tiago,

Here a small example that causes the graph to crash on v2.23:

    from graph_tool.all import *
    import graph_tool as gt
    g = gt.collection.data["celegansneural"]
    interactive_window(g)

Once the window comes up, make sure you maximize it, and then start moving the roller up and down to zoom in/out rapidly. 

The crash behavior is very erratic, in the sense that sometimes it crashes immediately, and some other times you have to keep zooming in/out for a few seconds. But it is important to maximize your window (on smaller windows it does not happen).

Coincidentally, is there a way to install previous versions of graph-tool using apt-get? 

Regards,
Vaggelis

On Wed, Sep 27, 2017 at 1:35 AM, Tiago de Paula Peixoto <tiago@skewed.de> wrote:
On 27.09.2017 00:29, Evangelos Petsalis wrote:
> I am using Ubuntu 16.04 (on a fresh install) and the way I plot the graph is
> using a GraphWidget that is attached to a Glade-generated GUI. The error I
> get is a segmentation fault that kills the whole python environment, which
> leads me to believe that there is something going on with the rendering
> library - you can see the code dies in the middle of rendering. Note that
> this happens on v2.22 and v2.23 but NOT on v.2.19. 
>
> I know I am not being much more specific than before, but posting the code
> that currently crashes would be of zero help since it far from the simple
> example that you are asking. 

Without a specific example, there is virtually zero that anything can be
done, unfortunately. I don't observe any crashes when doing said operations,
so it must be tied to the specific way you are doing things, and it is
difficult to guess blindly...

--
Tiago de Paula Peixoto <tiago@skewed.de>


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