PyViz visualizer : not enabled (Missing python modules: goocanvas)

[ben othmen rabeb]

Hi,  

is there anyone here who can help me to solve this problem, I want to visualize the result of the code I received this message and i can't install goocanvas

assert failed. cond="uid != 0", msg="Assert in TypeId::LookupByName: ns3::VisualSimulatorImpl not found", file=../src/core/model/type-id.cc, line=755
terminate called without an active exception
Command ['/home/rabeb/workspace/ns-allinone-3.25/ns-3.25/build/scratch/blockchain-simulator', '--SimulatorImplementationType=ns3::VisualSimulatorImpl'] terminated with signal SIGIOT. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>").

Thank you

[Tom Henderson]

On 7/30/22 06:09, ben othmen rabeb wrote:

Hi,  

is there anyone here who can help me to solve this problem, I want to visualize the result of the code I received this message and i can't install goocanvas

You need to install goocanvas if you want to use PyViz.  If you can't install it, you could try to use another visualizer such as NetAnim or NetSimulyzer.  What system are you using, for which you can't install goocanvas?

I believe that these are still the packages needed on Ubuntu to support PyViz on recent Ubuntu releases:

 apt install gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3  

- Tom

assert failed. cond="uid != 0", msg="Assert in TypeId::LookupByName: ns3::VisualSimulatorImpl not found", file=../src/core/model/type-id.cc, line=755
terminate called without an active exception
Command ['/home/rabeb/workspace/ns-allinone-3.25/ns-3.25/build/scratch/blockchain-simulator', '--SimulatorImplementationType=ns3::VisualSimulatorImpl'] terminated with signal SIGIOT. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>").

Thank you

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[ben othmen rabeb]

Hi Tom 

thank you 

i use ubuntu 16.04 

i try to execute this command  apt install gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3 and i get the same error 

 i get this error

E: Unable to locate package goocanvas

[Tom Henderson]

On 7/30/22 14:20, ben othmen rabeb wrote:
> Hi Tom
> thank you
> i use ubuntu 16.04
> i try to execute this command  apt install gir1.2-goocanvas-2.0
> python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3
> and i get the same error
>  i get this error
>
> E: Unable to locate package goocanvas

If you are trying to install a package named 'goocanvas', please don't--
it doesn't exist.

Does the following work for you? I just tested on a physical machine
and a Docker container and both worked for me without error.

$ apt install gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo
python3-pygraphviz gir1.2-gtk-3.0 ipython3