在python中绘制3D图像

Question

我想绘制这些条件的3D绘图，但我在z(y<0) = np.sin(x(y<0))*math.exp(y(y<0))处得到“无法分配函数来调用”。我不确定我做错了什么。我比python更熟悉matlab。

import numpy as np 
import matplotlib.pyplot as plot 
from mpl_toolkits.mplot3d import Axes3D 
from scipy.interpolate import interp2d 
from matplotlib import cm 
import math 
x= np.meshgrid(np.linspace(0,4*np.pi,200)) 
y=np.meshgrid(np.linspace(-2,2,200)) 
z = np.sin(x)*(y+1); 
z(y<0) = np.sin(x(y<0))*math.exp(y(y<0)) 
fig3=plot.figure(3) 
ax3 = fig3.gca(projection='3d') 
surf3 = ax3.plot_surface(x,y,z, cmap=cm.coolwarm, linewidth=0, 
antialiased=False) 
plot.autoscale(enable=True,axis='x',tight=True) #axis tight 
plot.xlabel('x') 
plot.ylabel('y') 
plot.zlabel('z') 

Answer 1

在Python中，索引是用方括号[]代替Matlab的圆的做()