python圆环图添解释说名的线的代码
时间: 2023-11-12 21:10:05 浏览: 80
以下是使用Matplotlib绘制圆环图,并添加解释说明线的示例代码:
```python
import matplotlib.pyplot as plt
# 数据
sizes = [30, 20, 15, 10, 25]
labels = ['A', 'B', 'C', 'D', 'E']
colors = ['red', 'orange', 'yellow', 'green', 'blue']
# 绘制圆环图
fig, ax = plt.subplots()
ax.pie(sizes, labels=labels, colors=colors, wedgeprops={'width': 0.4})
# 添加解释说明线
for i in range(len(sizes)):
angle = sum(sizes[:i+1]) / sum(sizes) * 360
if angle > 180:
angle -= 360
x = 1.2 * 0.5 * (1 + 0.4) * np.cos(np.deg2rad(angle))
y = 1.2 * 0.5 * (1 + 0.4) * np.sin(np.deg2rad(angle))
if angle <= 0:
ha, va = 'right', 'center'
else:
ha, va = 'left', 'center'
plt.annotate(labels[i] + ': ' + str(sizes[i]) + '%', xy=(x, y), xytext=(1.5*x, 1.5*y),
ha=ha, va=va, arrowprops=dict(arrowstyle='-', color=colors[i]))
plt.axis('equal')
plt.show()
```
其中,`sizes`、`labels`和`colors`分别表示圆环图的数据、标签和颜色。`wedgeprops={'width': 0.4}`表示圆环的宽度为整个圆的40%。接下来的循环添加了解释说明线,其中`angle`表示当前扇形的中心角度,`x`和`y`表示对应的坐标,`ha`和`va`表示文本的水平和垂直对齐方式,`arrowprops=dict(arrowstyle='-', color=colors[i])`表示箭头的样式和颜色。最后,`plt.axis('equal')`表示将x轴和y轴比例设为相等,以保证圆环图的圆形。
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