runtime warning for add-edge #154
Description
For the following code:
pgm = daft.PGM(dpi = 150, alternate_style="outer") pgm.add_node("sb","Start\nBalance", 1, 4, aspect = 2.2, observed = True, plot_params = {'facecolor': 'cadetblue'}) pgm.add_node("ba","Bet\nAmount", 1, 3, aspect = 2.2, shape = "rectangle", plot_params = {'facecolor': 'thistle'}) pgm.add_edge("sb", "ba") pgm.render() I get a runtime warning error message:
/usr/local/lib/python3.7/dist-packages/daft.py:843: RuntimeWarning: divide by zero encountered in double_scalars * (np.sign(dy) or 1.0) <matplotlib.axes._axes.Axes at 0x7f2085d4d190> 
The graph renders just fine, but I am unsure whether I am doing something wrong or if the Warning should not really occur. Thanks!