Re: [igraph] igraph plot problem with python

[Simone Gabbriellini]

Hi Tamas,

> Hi Simone,
>
> > I am trying to read and plot a .net file. everything run smoothly
> > unless I try to call the plot function: [...]
> >
> > It is strange, since cairo is on my system (I use it with R)...
> It's not enough to have Cairo on your system, what you need is the  
> Python interface for Cairo as well. You can check whether you have  
> it or not by trying to import it in the Python shell:
>
> >>> import cairo
The result is: No module named Cairo

I have installed Cairo via Fink, but the last version is 1.0.4-1,  
which is quite old...

pycairo need at least >= 1.4.12 so no way to compile it...

seems to be quite intricated...

Simone

> In fact, that's what igraph does in order to check whether Cairo is  
> installed or not. In case of an ImportError, igraph creates a "fake"  
> cairo module temporarily that just throws an exception with every  
> single function call saying that plotting is not available.
>
> So, anyway, make sure you have the Python interface for Cairo. If  
> not, download it and try to compile it:
>
> http://cairographics.org/releases/pycairo-1.4.12.tar.gz
>
> It should compile by the usual python setup.py build && sudo python  
> setup.py install way if you have Cairo installed (but make sure you  
> call MacPython's python executable and not the built-in one,  
> otherwise the Python bindings of Cairo get installed for the built- 
> in Python and not MacPython). The one shipped with R might not be  
> enough, though, as it is buried somewhere in a non-standard path  
> inside /Applications/R.app/whatever, so I installed the Cairo  
> libraries from fink and then compiled pycairo.
>
> --
> Tamas
>
>
>
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