plotting into figure and axis

[ahoc]

• nxviz version: 0.5.0
• Python version: 3.6.6
• Operating System: LInux

Description

I would like to plot into figure and axis instead of having a new figure created automatically. Apparently it is not possible to specify those as parameter.

As workaround, I did:

fig, axi = plt.subplots(1, 1, num=1)
cp = nv.CircosPlot(G);
plt.close(); # remove the figure automatically created by nv
cp.figure=fig;
cp.ax=axi;
cp.draw();
plt.show();

This works more or less if only one subplot is made. For several subplots, and if colorbars are created (automatically), it does not work well.

[ericmjl]

Thanks @ahoc! Looking forward to seeing your PR #500 completed and merged in 😄.