import numpy as np import matplotlib.pyplot as plt from mpl_toolkits.mplot3d import Axes3D # 定义三个变量的范围 x = np.linspace(-5, 5, 100) y = np.linspace(-5, 5, 100) z = np.linspace(-5, 5, 100) # 使用 meshgrid 生成三维网格点 X, Y, Z = np.meshgrid(x, y, z) # 定...
import numpy as np from mpl_toolkits.mplot3d import Axes3D#画3d图案所必需的 1. 2. 3. 2.创建二维平面网格meshgrid() #z=x^2+y^2 x=np.linspace(-1,1,100) y=np.linspace(-1,1,50) x_mesh,y_mesh=np.meshgrid(x,y,indexing='ij')#生成网络,参数'ij'生成网格形状是第一个维度对应x,第...
from mpl_toolkits.mplot3d import axes3d ax = plt.axes(projection='3d') x = arange(-5, 5, 0.1) y = arange(-5, 5, 0.1) x,y = meshgrid(x, y) R = sqrt(x**2+y**2) z = sin(R) ax.plot_surface(x, y, z) ax.set_xlabel('X Axes') ax.set_ylabel('Y Axes') ax.set_...
X, Y = np.meshgrid(x, y) # 查看数组大小 print('X为{}行{}列的数组'.format(len(X),len(X[0]))) # 计算Z轴数据,将List转化为数组 Z = np.array(function_value(x,y)) print('Z为{}行{}列的数组'.format(len(Z),len(Z[0]))) # 绘制3D图形 surf = ax.plot_surface(X, Y, Z,...
➤013D plot 1.基本语法 在安装matplotlib之后,自动安装有 mpl_toolkits.mplot3d。 #Importing Libraries importmatplotlib.pyplotasplt frommpl_toolkits.mplot3dimportaxes3d #3D Plotting fig = plt.figure() ax = plt.axes(projection="3d") #Labeling ...
x1 = np.arange(-5, 5, 0.25) y1 = np.arange(-5, 5, 0.25) x1, y1 = np.meshgrid(...
ax=Axes3D(fig) t= np.linspace(1, 5, 30) x, y=np.meshgrid(t,t)print(x)print(y) xy= np.stack([x.flat, y.flat], axis=1)print(xy) z= xy[:, 0] * xy[:, 1] z=np.array(z) z=z.reshape(x.shape)print(z) ax.plot_surface(x, y, z, cmap='rainbow', rstride=1, cstr...
绘制参数球面时并没有用到np.meshgrid()来生成网格，而是用了np.outer()。实际上np.meshgrid()和np....
mplot3d import Axes3D 4 x = np.array([0,1,2]) 5 y = np.array([0,1]) 6 X,Y = np.meshgrid(x,y)#X,Y扩展成了矩阵, 7 print(X) 8 print(Y) 9 theta0, theta1, theta2 = 2, 3, 4 10 ax = Axes3D(plt.figure())#用来画三维图 11 Z = theta0 + theta1*X + theta2*Y...
importnumpyasnpimportmatplotlib.pyplotaspltfrommpl_toolkits.mplot3dimportAxes3Ddefplot3D():f1=plt.figure()ax=Axes3D(f1)x=np.arange(-2,2,0.1)y=np.arange(-2,2,0.1)X,Y=np.meshgrid(x,y)Z=X**2+Y**2;ax.plot_surface(X,Y,Z)plt.show()defmain():plot3D()main() ...