Python使用Matplotlib进行图案填充和边缘颜色分离的三种方法

import matplotlib.pyplot as plt

# Set global hatch color
plt.rcParams['hatch.color'] = 'blue'

# Create a bar plot
fig, ax = plt.subplots()
bars = ax.bar([1, 2, 3], [3, 2, 5], color='white', edgecolor='black', hatch='/', linewidth=2)

plt.show()

import matplotlib.pyplot as plt

x = [1, 2, 3]
y = [4, 5, 6]

# Create the figure and axis
fig, ax = plt.subplots()

# Plot the hatch
bars = ax.bar(x, y, color='white', edgecolor='red', hatch='/', linewidth=2)

# Plot the edge
bars = ax.bar(x, y, color='none', edgecolor='black', linewidth=2)

plt.show()

import matplotlib.pyplot as plt
import numpy as np

x = np.arange(4) + 1
y_red = [1, 3, 1, 4]
y_blue = [2, 2, 4, 1]

# Create the figure and axis
fig, ax = plt.subplots()

# Plot the bars with transparent face color
bars_red = ax.bar(x - 0.2, y_red, width=0.4, edgecolor='black', hatch='/', facecolor=(0, 0, 0, 0))
bars_blue = ax.bar(x + 0.2, y_blue, width=0.4, edgecolor='black', hatch='\\', facecolor=(0, 0, 0, 0))

# Customize the hatch color
for bar in bars_red:
    bar._hatch_color = (1.0, 0.0, 0.0, 1.0)  # Red hatch color

for bar in bars_blue:
    bar._hatch_color = (0.0, 0.0, 1.0, 1.0)  # Blue hatch color

plt.show()