Hi,

I can't believe I have to explain this, but this is the mailing list for graph-tool, not for igraph.

Please refer to the igraph mailing list for help.

Best,
Tiago

Am 21.09.22 um 12:21 schrieb Jos J:
I have python 3.8.13, igraph 0.10.1, with matplotlib 3.6.0, and when running the sample scripts from the install page on the website, I am receiving an error. The scripts can be found here: https://igraph.org/python/tutorial/latest/install.html <https://igraph.org/python/tutorial/latest/install.html>

I am referring to the following

 >>> import matplotlib.pyplot as plt
 >>> import igraph as ig
 >>> fig, ax = plt.subplots()
 >>> g = ig.Graph.Famous("petersen")
 >>> ig.plot(g, target=ax)
 >>> plt.show()

I receive the following errors at the ig.plot(g, target=ax) line:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In [120], line 6
       4 fig, ax = plt.subplots()
       5 g = ig.Graph.Famous("petersen")
----> 6 ig.plot(g, target=ax)
       8 plt.show()

File ~/anaconda3/envs/rapids-2208/lib/python3.8/site-packages/igraph/drawing/__init__.py:245, in plot(obj, target, bbox, *args, **kwds)
     243         return
     244     else:
--> 245         plotter(
     246             backend,
     247             target,
     248             palette=palette,
     249             *args,
     250             **kwds,
     251         )
     252         return target
     254 # Cairo backend

File ~/anaconda3/envs/rapids-2208/lib/python3.8/site-packages/igraph/drawing/graph.py:558, in __plot__(self, backend, context, *args, **kwds)
     552 from igraph.drawing import DrawerDirectory
     554 drawer = kwds.pop(
     555     "drawer_factory",
     556     DrawerDirectory.resolve(self, backend)(context),
     557 )
--> 558 drawer.draw(self, *args, **kwds)

File ~/anaconda3/envs/rapids-2208/lib/python3.8/site-packages/igraph/drawing/matplotlib/graph.py:233, in MatplotlibGraphDrawer.draw(self, graph, *args, **kwds)
     231 drawer_method = vertex_drawer.draw
     232 for vertex, visual_vertex, coords in vertex_coord_iter:
--> 233     drawer_method(visual_vertex, vertex, coords)
     235 # Construct the iterator that we will use to draw the vertex labels
     236 vs = graph.vs

File ~/anaconda3/envs/rapids-2208/lib/python3.8/site-packages/igraph/drawing/matplotlib/vertex.py:60, in MatplotlibVertexDrawer.draw(self, visual_vertex, vertex, coords)
      49 width = (
      50     visual_vertex.width
      51     if visual_vertex.width is not None
      52     else visual_vertex.size
      53 )
      54 height = (
      55     visual_vertex.height
      56     if visual_vertex.height is not None
      57     else visual_vertex.size
      58 )
---> 60 stroke = visual_vertex.shape.draw_path(
      61     ax,
      62     coords[0],
      63     coords[1],
      64     width,
      65     height,
      66     facecolor=visual_vertex.color,
      67     edgecolor=visual_vertex.frame_color,
      68     linewidth=visual_vertex.frame_width,
      69     zorder=visual_vertex.zorder,
      70 )
      71 ax.add_patch(stroke)

File ~/anaconda3/envs/rapids-2208/lib/python3.8/site-packages/igraph/drawing/shapes.py:168, in CircleDrawer.draw_path(ctx, center_x, center_y, width, height, **kwargs)     166     return mpl.patches.Circle((center_x, center_y), width / 2, **kwargs)
     167 else:
--> 168     ctx.arc(center_x, center_y, width / 2, 0, 2 * pi)

AttributeError: 'AxesSubplot' object has no attribute 'arc'


---------------------------------------------

Not sure if its my python or package versions, or if its a configuration issue, or possibly an issue with igraph or matplotlib. Any advice would be most welcome

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--
Tiago de Paula Peixoto <[email protected]>

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