Plotted lines gets compressed when plot pie chart with matplotlib.pyplot

Question

In my program first I draw a tree (graph with no cycles) plotting just lines. As yo can see in the figure

My problem is that when I plot a pie chart over the same figure, all the plots and pie chart gets compresed, and the box disapears, as you can see in the next figure

My code basically is:

from mathplotlib import pyplot as plt plt.figure() # Plottin a straight line from (0,0) to (1,1) in the (x,y) plane X=[0,1] Y=[0,1] plt.plot(X,Y) # Plotng a pie chart plt.pie([100],radius=0.5,center=(1/4,3/4)) Why it happends? How can I fix it?

Answer 1

The keyword Frame in the call to pie() is what you are after.

from matplotlib import pyplot as plt
X = [0, 1]
Y = [0, 1]
plt.plot(X, Y, color='black', zorder=100)
plt.pie([1], radius=0.5, center=(0.5, 0.5), frame=True)
plt.show()