I am trying to plot two circles in python using matplotlib. I chose their positions such that they should not overlap. However, in the plot it looks like they do. Can anyone tell me where my mistake is?
import numpy as np
import matplotlib.pyplot as plt
plt.rcParams['figure.dpi'] = 5000
radius = 0.0025
positions = np.array([[0.5, 0.05], [0.5 2*radius 0.001, 0.05]])
fig, ax = plt.subplots()
ax.cla()
ax.set_xlim((0, 1.0))
ax.set_ylim((0, 0.1))
ax.set_aspect('equal')
for n in range(len(positions)):
circle = plt.Circle((positions[n, 0], positions[n, 1]), radius=radius, color='r')
ax.add_patch(circle)
plt.show()
fig.savefig("circles.png")
many thanks in advance!
CodePudding user response:
The reason is the Circle patch is drawn as a face and an edge - the edge has a thickness, which is what is overlapping.
We can resolve this by setting the facecolor
to red, and the edgecolor
to None
, so it doesn't get plotted.
For example:
circle = plt.Circle((positions[n, 0], positions[n, 1]), radius=radius,
facecolor='r', edgecolor='None')