matplotlib可视化之饼图、三维图

饼图

import matplotlib.pyplot as plt

labels = 'Frogs', 'Hogs', 'Dogs', 'Logs'
sizes = [15, 30, 45, 10]

# 设置分离的距离，0表示不分离
explode = (0, 0.1, 0, 0) 

plt.pie(sizes, explode=explode, labels=labels, autopct='%1.1f%%', shadow=True, startangle=90)

# Equal aspect ratio 保证画出的图是正圆形
plt.axis('equal') 

plt.show()

三维图

绘制三维散点图

import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D

data = np.random.randint(0, 255, size=[30, 30, 30])

x, y, z = data[0], data[1], data[2]
ax = plt.subplot(111, projection='3d')  # 创建一个三维的绘图工程
#  将数据点分成三部分画， 在颜色上有区分度
ax.scatter(x[:1], y[:1], z[:1], c='y')  # 绘制数据点
ax.scatter(x[10:20], y[10:20], z[10:20], c='r')
ax.scatter(x[20:30], y[20:30], z[20:30], c='g')

ax.set_zlabel('Z')  # 坐标轴
ax.set_ylabel('Y')
ax.set_xlabel('X')
plt.show()

绘制三维平面图

from matplotlib import pyplot as plt
import numpy as np
from mpl_toolkits.mplot3d import Axes3D

fig = plt.figure()
ax = Axes3D(fig)
X = np.arange(-4, 4, 0.25)
Y = np.arange(-4, 4, 0.25)
X, Y = np.meshgrid(X, Y)
R = np.sqrt(X**2 + Y**2)
Z = np.sin(R)

# 具体函数方法可用 help(function) 查看，如：help(ax.plot_surface)
ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap='rainbow')

plt.show()

参考链接：掘金-Python绘制六种可视化图表详解

标签：plt,20,30,matplotlib,三维图,import,np,ax,之饼
来源： https://www.cnblogs.com/lfri/p/12251990.html